My 5 mo. Pygmy buck broke his pen and has been having the run of the place

If that isn't bad enough my 2 1/2 mo. Nubian doling fell in love with him and kept escaping to be running loose with him. Every time I thought I had her where she couldn't get out she found a way. She has been bred by him numerous times now...
I repaired the little bucks pen and things have settled down. Now, what should I do about this little doe?
She gets bottle fed 2 quarts of milk (I can keep her on milk as long as I need to), Alfalfa pellets and about 2 cups of COB+BOSS a day. Since the buck is a Pygmy and she is a Nubian will it be okay (assuming that she settles) to let her stay pregnant or should I get something from the vet? She is big for her age, it is hard to tell her from the 5 month olds, but I am so sorry this happened to her.
Has anyone had such a young doeling kid? Were they and the babies okay? Has anyone used something from the vet (starts with an 'L'?) So the doe wouldn't stay pregnant?
What is the best way to handle this
Thanks,
Christy