Mauisgirl

My parents use to fight allot. I am an adult, married and on my own, but I understand how you feel. Like everyone said, you are an adult, moving out is your choice. Do it and make no excuses. It is hard, but it will be better in the long run!

Your mom is not the healthiest of people and she is being selfish using someone you love to manipulate you...don't let her. First move the cat to a safe place
(and maybe not even use your real name when you board it in case she tries to remove it...or give SPECIFIC orders that nobody but you can remove the cat)
and by all means take it with you when you leave. Don't let her guilt trip you into apologizing for your actions...this is your cat and your an adult who needs help.

Like I said, I understand because my babies have been known to help me through the rough times. I wish you all the best.