What part of her is prolapsing? I assume either vaginal or rectal. The treatment is different and if rectal, she will likely need a purse string suture by a veterinarian. I assume from your story that it is vaginal, however.
If it is going in when she stands, that is pretty normal for a mild vaginal prolapse.
At 6 months of age and a full size doe, I would expect her to be at least around 70lbs or so if she was not stunted from parasites or poor feed management. Most full size breeds under good management can be easily bred around 8 months of age and at least 80lbs, and usually kid around 12-13 months of age. While not ideal, KIDDING at 6-7 months of age may still happen normally especially if she is carrying multiples and isn't disadvantaged due to stunting/malnutrition, huge single kid, or a narrow pelvis. (meaning she was LIKELY bred by a sibling in the same pen as bucks can be sexually active at 10-12 weeks of age!) If she is NOT a full size breed (IE, nigerian or pygmy), she will be smaller - but hopefully bred to a miniature breed buck? If she is a miniature breed or cross who was possibly bred to a full size breed buck, that is even more concerning. I'd be MOST suspicious of any bucklings that were in her pen, but would also be a good idea to find out what breeds the person raises and any bucks that were on the property.
I'd be watching her closely. There are vaginal prolapse retention sutures that can be placed by a veterinarian, which will keep her prolapse in but should be removed as she's kidding otherwise she will rip her vulva to shreds - usually survivable but not necessarily humane if allowed to kid through. They should be replaced after kidding. There are also prolapse spoons which can be used with a prolapse harness made for sheep. The spoon is inserted vaginally and held in place by being tied to wool if sheep, or using the harness in hair breeds/goats. They are usually able to kid around these retainers though many will remove and replace after lambing/kidding. Some mild vaginal prolapses such as those that go away when they stand do not need additional attention besides monitoring.
A vaginal prolapse is usually distinct from a uterine prolapse, which happens after giving birth. A uterine prolapse is more of an emergency and you will see the distinct 'buttons' of the uterus on the fleshy prolapsed uterus. It is exposed to contamination and injury when prolapsed, but can often be replaced and retained with external vulvar suture. Both prolapses can generally be replaced and retained with suture. This vulvar suture is needed as the doe will often feel pressure from the swelling, and will just continue to push and may re-prolapse. The suture is easily removed in several days after swelling has reduced and healing has occurred.
Generally, vaginal prolapses will recur and they are not usually good candidates for re-breeding. Uterine prolapses are considered to be less heritable and less likely to recur if I recall correctly.
Another option is attempting to terminate the pregnancy in hopes that they are small enough to pass vaginally pre-term, OR a scheduled C-section which may also result in too-early kids being born and during/after which may die. If the doe is undersized OR is a miniature that may have been bred to a full size breed buck, then I'd be more prone (personally) to terminate a pregnancy earlier. An emergency C-section AFTER the doe goes in labor would be more likely to give live kids if desired, but could happen at any time and may incur further costs as an emergency vet bill. C-sections on does that are compromised can be quite risky to the doe as well. Another option is simply culling the doe before a trainwreck kidding if she otherwise doesn't suit your goals as a potential non-breeder in the future. If she is a PET, then you may choose to not consider that option. These options all depend on your goals and desired outcome - it is a very situational and personal decision, but they ARE options.
Work with your veterinarian is my best advice here.
If it is going in when she stands, that is pretty normal for a mild vaginal prolapse.
At 6 months of age and a full size doe, I would expect her to be at least around 70lbs or so if she was not stunted from parasites or poor feed management. Most full size breeds under good management can be easily bred around 8 months of age and at least 80lbs, and usually kid around 12-13 months of age. While not ideal, KIDDING at 6-7 months of age may still happen normally especially if she is carrying multiples and isn't disadvantaged due to stunting/malnutrition, huge single kid, or a narrow pelvis. (meaning she was LIKELY bred by a sibling in the same pen as bucks can be sexually active at 10-12 weeks of age!) If she is NOT a full size breed (IE, nigerian or pygmy), she will be smaller - but hopefully bred to a miniature breed buck? If she is a miniature breed or cross who was possibly bred to a full size breed buck, that is even more concerning. I'd be MOST suspicious of any bucklings that were in her pen, but would also be a good idea to find out what breeds the person raises and any bucks that were on the property.
I'd be watching her closely. There are vaginal prolapse retention sutures that can be placed by a veterinarian, which will keep her prolapse in but should be removed as she's kidding otherwise she will rip her vulva to shreds - usually survivable but not necessarily humane if allowed to kid through. They should be replaced after kidding. There are also prolapse spoons which can be used with a prolapse harness made for sheep. The spoon is inserted vaginally and held in place by being tied to wool if sheep, or using the harness in hair breeds/goats. They are usually able to kid around these retainers though many will remove and replace after lambing/kidding. Some mild vaginal prolapses such as those that go away when they stand do not need additional attention besides monitoring.
A vaginal prolapse is usually distinct from a uterine prolapse, which happens after giving birth. A uterine prolapse is more of an emergency and you will see the distinct 'buttons' of the uterus on the fleshy prolapsed uterus. It is exposed to contamination and injury when prolapsed, but can often be replaced and retained with external vulvar suture. Both prolapses can generally be replaced and retained with suture. This vulvar suture is needed as the doe will often feel pressure from the swelling, and will just continue to push and may re-prolapse. The suture is easily removed in several days after swelling has reduced and healing has occurred.
Generally, vaginal prolapses will recur and they are not usually good candidates for re-breeding. Uterine prolapses are considered to be less heritable and less likely to recur if I recall correctly.
Another option is attempting to terminate the pregnancy in hopes that they are small enough to pass vaginally pre-term, OR a scheduled C-section which may also result in too-early kids being born and during/after which may die. If the doe is undersized OR is a miniature that may have been bred to a full size breed buck, then I'd be more prone (personally) to terminate a pregnancy earlier. An emergency C-section AFTER the doe goes in labor would be more likely to give live kids if desired, but could happen at any time and may incur further costs as an emergency vet bill. C-sections on does that are compromised can be quite risky to the doe as well. Another option is simply culling the doe before a trainwreck kidding if she otherwise doesn't suit your goals as a potential non-breeder in the future. If she is a PET, then you may choose to not consider that option. These options all depend on your goals and desired outcome - it is a very situational and personal decision, but they ARE options.
Work with your veterinarian is my best advice here.