I think your mother and your rooster would both be better off if you found her an animal in LA. I would think the travel and change of location would be quite stressful on your bird. I would suggest a nice dog or cat. Something that can live indoors and welcome petting and cuddling if she is so inclined. Chickens aren't so much that way. Your chicken would also miss having a flock. They are flock animals and do better as such.