If you learn to express yourself with her history you will never have to worry. She needs that and she is asking you to share a part of yourself even if it is just how your day was. There is no rule book for sharing your feelings. You can start doing this at any time by just trying. Sharing your feelings doesn't have to be deep seated emotions. She probably doesn't expect that right now.
When you share you build a connection with that person that you can't build any other way. At first it is kind of awkward and embarrassing. Or you feel uncomfortable, but like anything else with practice it becomes easier. You can slowly dig a little deeper. She needs that male support that says I am willing to convey this to you.
Start slow but start. You have to start with something you think you can communicate and not die from embarrassment. Make an effort. Build on that together.
I have a resource on this but I don't know if you can get it there - Mars and Venus Together forever. It is all about communication and the differences. It is wonderful
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