Temper Tantrums

So, at what age are temper tantrums inappropriate? Several friends and I are on somebody's @#!*-list because at the last gathering, we stopped a very serious and slow, subtitled movie she loves for something a bit more light-hearted (which I brought). The funny thing is it's not like we don't know the storyline of the movie as she had painstakingly told us the full story from beginning to end some time that week prior to viewing the movie. We've gotten together since and had invited her to come along, but we've had no response from her to our phone calls, texts, etc. She will be moving out of state in the next few weeks and none of us want this friendship to end over something so trivial ... but what else can we do when we've made every effort to contact her and she has blown us off? Now we're hearing from other friends that she is bad-mouthing us over the incident. It's one thing if this friend is a teenager (somehow being a diva is expected of teenage girls), but she is in her 50s (at the very least) ... shouldn't she know how to get over not getting her way all the time? We humored her and watched the movie for about an hour, but when people are snoring and yawning and killing the party, I think it's time to change the movie to liven things up again ... but that's just my opinion.

Last night I did some shopping and got her a small gift card as a farewell gift. I'm hoping that she can use it after the move to get little things that will help her and her family settle into their new place. The debate is whether or not I should bring it to her or if I should just mail it to her. I so don't want to deal with the drama. Any thoughts?