Anyway, enjoy dinner. Don't feel jerked around, it is your choice whether or not to go along with her whims at this time. You can always say "no, that doesn't work for me as I would feel too jerked around by agreeing to go with you." Instead you chose to say yes, for your own reasons. Accept the responsibility and the resentment will slide away.
BTW, I think you are right to interpret her increased honesty and her pains to be open as far as she can manage as movement. Movement where, we dunno. But, movement is good. She is getting unstuck from the mire she dove into head first. It's a tough thing, because it requires really beginning self-examination. She's been running, now perhaps she is starting to grow.
