Ok, Some background information. I went to a concert with a girl the other day. (Talking to her for a good 2 months prior). And she and I both had a really good time and I want to ask her out again. She is a very chill person and from our conversations I can tell she has definitely been hurt before (I am not sure if this is from a personal relationship or other).
Anyway point being, I am not sure if I should ask her out on something serious (Like a dinner) Or something simple (Like a movie).