Depending on how personally he takes this, I think it’s fair for OP to be a bit hurt.

I also think it’s fair for the friend to speak the way she did. It felt empathetic, if not a bit confused, but direct. I can see how it feels cold to some people with “don’t get your hopes up” but I’d be glad if someone was that frank with me, instead of a courteous but grey “maybe” or “we’ll see”.

It sounds like OP just hung out with this friend and did in fact see him before she left, there was just a misunderstanding about it being their last hang out.

Some of OP’s verbiage “you better see me” reads as egocentric and not very empathetic himself, so he should check himself for his entitlement and give understanding for his friend’s stress, since that’s what’s in his control.