I don't even know what to say man... I think the movie was genuinely important to her, so everyone flaking on it sucks. But also... if as she says, it was only to have fun with everyone, then why was she so attached to it? I guess maybe her idea of fun with friends is different to the others; she wants to have fun by all working hard on a project together, where as the others just want to chill.
Idk, just messy all around.