I do feel bad for their kids, but I'm really relieved she is home with you.
We (DH and I) went with a dear friend a few years ago to help her repossess a horse. My friend had leased out the mare, but got a tip that she was being neglected.
When we got there the poor little thing was thin as a rail and covered in rain rot, locked in a tiny paddock with no food or water while all the other horses were fat and happy out in the field.
In retrospect we should have called the police before going in, but we didn't. DH had to take down the fence to get her out, while he was doing so, the woman's partner showed up and started screaming profanities at us, but it was the 3 of us against her.
My friend and I loaded the horse in my trailer, while DH put the fence back exactly as it was. We hauled out with the lady screaming about calling the cops.
A few minutes later while we were still on the road my friend got a call on her cell, it was a police officer..
"Maam, did you take the horse?"
"Yes officer she's my horse"
"Do you have the paperwork to prove it?"
"Yes I do"
"ok, no problem then, have a good day Maam"