How to make her gards down and turn off her trust issues?

I'm talking to this girl who had some terrible traumas due to her exes who cheated on her. I really want to make it up for her so i've been honest from day one about my intentions and she really appreciate it and she's honest that she's trying to change because as she said it's really hard to get to use to something green or safe. So how should i behave , she's sometimes acting cold and sometimes makes effort ms and i'm a bit confused
How to make her gards down and turn off her trust issues?
Post Opinion