Oh what a heart wrenching story! Your husband got there on time for sure! Aw what a sin about his sister :( Those awful men.
I am so glad your husband got that dog, what is his name?
As for bunnies, yea... My experience with a teenager was heck too. I had her spayed at 6 months and her hormones died off at closer to a year I think. So, she was just awful. Territorial, sossy, shy, grumpy. Like, the definition of a rabbit nobody would want. In the 6 years I have had her, and my mini rex adoptee, I have undergone some pretty scary things like tooth removal, retrobulbar disease, chronic abscesses, and home treatments for abscess drainage, scab work - you name it. If you have any questions ever I can help. If I don't know the answer I can direct you to a good rabbit forum (I can PM the address to you) or offer advice from my own experience. I love bunnies! (I didn't mention how my rabbit is a calender girl, did I? lol)
His teenager phase might last for a while. Some males never spray, some always do..