Your anger with your life, upbringing and their baggage is understandable. Where to go from here?

On which side of 18 are you?
What are or were your college plans?
Is going to a shelter an option? Is there one nearby that would accept your dog, too?
Are you in any contact with your father?

My pessimistic opinion: I agree with you. As long as you remain under the same roof as your mother, no therapy or medication can be truly effective in helping you to a better place.

Please try to remain safe, ShantheArtist23.