Toxic mom?

So for the past few months I have been seeing a therapist for multiple problems in my personal life and for depression and anxiety as well. I am over 18 so what I tell my therapist is between her and I. Today my mother asked what I talk about with her and what's going on in my personal life. I do not trust my mother at all with personal things. I told her that I don't only talk about her and that what I say is between my therapist and I. She got very mad at me. And I trust my father far far more than my mother. So when I tell my father something concerning (example: this was communication with dad via text when mom caused me a panic attack and how she was angry at me a while ago), mom turned around and said "so.. you're snitching to your father about me, are you? Don't test me". So I think she gets the feeling that she isn't trusted. And she always makes fun of me whenever I want to try a new style of clothing "oh you'll never wear that!" She says, even though I want to try something new. And when I wear guy clothes she says "girl up, Kelly. No guy wants to date a girl who dresses like a slob" (I'm straight, and I know men don't care). And this is the kicker, she brags to her friends about how much of a perfect mother she is. And she makes fun of my political views and then goes on a rant about how she can't express her feelings. And she tells me I have no reason to be depressed and she's laughed at me when I've had panic attacks. She doesn't accept the fact that she could be a toxic mother and that I could possibly have a mental illness.