So my current experience is with a girl I was seeing that kind of messed up big plans of ours very close to the date of, when she knew way beforehand she couldn't make it. I told her it was fine but I didn't talk to her for nearly a week. She then texts me saying she's really sorry and she misses me and hopes I'm not mad (I'm genuinely not, I just felt like it wasn't worth the time to go out of my way to talk to her). In general, what's the protocol on these sort of communications? Do you wait longer or address it immediately?

What are your guys' experiences with this? And how do you usually handle women knowing about big events and flaking?