I used to know a girl that actually had several girls that were kept as dogs by her and her Father. They owned plenty of land and did a lot of careful searching and talking with the girls/women who expressed desire and if things were right would go and get them and bring them back and trained them and raised them and eventually the girls to know nothing but being a pet and didn't speak but in pet and left everything behind for it so is it possible.. Yes with the right resources and time.