Advice with help with trust issues

r/

I (20M) and my gf (19F), have been together for 6 months. We both come from a background where we have our own issues to deal with, and from the start i set myself a clear goal of making her feel safe with me. She has helped me in many ways and i feel I mature through the relationship. But she has issues like difficulties getting out of bed, sudden severe mood changes (mostly in the morning) and she doesn’t get along very well with herself. I try to help her as much i can, and i advised her to seek for professional help, which she did, but the appointments are far from one another, and the relationship she has with her family doesnt help her at all. Important to mention also that she hasnt succeeded yet in making friends in college, i was part of an initial friend group that later broke out but she has a friend group at home. Our main issue in the relationship is my defense mechanisms that i became aware of and im trying really hard to deal with, I am also planning on seeking professional help, but sometimes she doesn’t seems to trust me yet. I get that it’s been 6 months and some people need time, but the moment i feel we are making progress, something happens, she thinks the worst case scenario IMMEDIATELY and i feel like we are 2 steps backwards. What would you do if you were in my shoes?

TLDR How to help girlfriend trust me

Sorry for any grammatical mistakes