history: I did not invite my sister to a party she wanted to come to. She felt hurt. I didnt think to invite my sister to a party I recently helped put on. Uh oh. I bet she wasn't happy when she found out. No she wasnt. In all fairness it was a group of people I never would have thought she would have wanted to hang out with.
current: Yeah, I can understand that.... But it probably would have been best to invite her anyway, just in case.
next: you are right. Guess I know better for next time.