Feel comfortable and make sure she is comfortable around you. Don't force things like unwanted jokes to break the ice. Try to be there when she needs when you can. Give her enough space always. Don't bend too much either, don't accept everything and if you are in the right, speak your mind. Don't try to be perfect and know she has her struggles just as you have. Be comfortable to open up many times and be invested when she does. Don't get caught up on what you can see as just a minor thing, don't overthink things too much.