(((((((Babysteps))))))) Others have already given you some very good advice about your situation, so I will be brief: Eat. feed yourself and starve the Depression. Your Father is not a good witness to your worth, so don't make your self confidence dependent on his opinion. take CARE of youreslf!!!!
Sometimes something just is the match to the gasoline. I had a similar but not as extreme experience with my mom last night.

I know her enough by now to a) not expect much from her in certain areas. b) I knew her mother well enough to see where this came from and to not take it personally (hard). Hang on. Get out. Talk to your T. Learning to handle this does not make you disloyal

