hmm ok, I have a mate often very good to chat too, supportive etc, good listerner but has recently flaked me spectacularly.
She has a cosmetic issue which can make her self conscious.But i sometimes perhaps wrongly assume she uses it too get out of situations she's too lazy/doesn't want too, i.e she is too self conscious to work because of it but has an 'overnight hotel date' every other weekend with someone they met online.I would have thought to do that took quite a bit of confidence.
Anyway I digress, on my birthday i recieved a torrent of upset message because a guy she was chatting too had gone quiet and not even so much as a hows you, happy birthday to me, and then started the 'I don't feel well' 
and spent all day drip feeding 'maybes' until she finally told me she 'wasn't going' a hour before. 
I just sucked it up and forgave and forgot.
FF till now, She invited me to a relatives party, I am a SAHM my partner works insane hours (she has no kids) so quite a bit of moving things around as you can imagine for a rare night out,
a bit ago i received..
"I don't think i'm going out tomorrow" something about cosmetic issue making her feel down.
I asked her " not even to the before meal"
"No, cba no room in taxi either"
she was meant to be driving me, so thats my night out fucked off then.
i haven't replied i just ...can't i'm quite upset tbh. 
AIBU?