I’d cancel hotel and book my own room. You can’t cancel tickets since you volunteered to pay for hers (not sure why as she makes way more than you). But you don’t need to pay for her hotel.

I don’t think if people don’t call or text or initiate it’s because they have personality disorders. They just aren’t interested that much. I mean she’s interested in attending events especially if you pay for her entertainment and accommodations. But nothing beyond that.

Doesn’t sound like friendship to me. Especially since you call her BFF. Certainly not best friend at all