If you just want to vent that your mother is driving you nuts, you certainly can do that. Sounds like it would drive me nuts too. You have my sympathy. If you want to believe that there's no way you can change any of this, then that will be your truth.

I think you are conceding defeat without even trying to implement a strategy for taking back some say over this relationship. You're overwhelmed by your mother's determination. And she has your guilt working for her. You might want to think out why you get so guilty feeling. It's a standard principle of human relations that no one can make you feel guilty, unless you buy into that. You might benefit from discussing this guilt thing with a therapist. Medication might reduce your depressive symptoms a bit. I don't think it will help you deal with your mother.