You are putting way too much energy into this interaction. If you get there early and are hungry then go buy some food. If you wait until she arrives then you can offer but if she declines then go get some for yourself and let her do whatever she wants. If she offers and your hungry then take her up on the offer. Buying food or not buying food is not going to make or break your sitch. I would focus more on being confident and presenting yourself as a happy man.
Last edited by Cadet; 07/23/1812:25 PM. Reason: Link
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.