So I have a DF from childhood, let's say Amanda. She has a bit of a history of being a tad selfish, often not replying and getting in contact when it suits her. She's lived abroad for the past 6 years.
A couple of times this year she's messaged to suggest various holidays that she's come up with (that suit her), I've always said it'll need to be closer to the time as obviously travel is difficult for everyone right now.
Fast forward to now and she's in Europe for 6 weeks. I always said I'd definitely join her but would need to be 2 weeks post double vaxxed (and gave her dates) and ideally somewhere on our green list. She said no problem and we could sort out a location.
The dates have come and gone, and looking at my SM realised I'd messaged her a couple things on FB a while back, no reply. I'd whatsapped about a separate thing, and then last week sent more whatsapps with the details about green list places and possibilities and dates saying let me know what you think. No reply.
This is annoying in itself but on her SM it's clear she's met another female traveller, with a shared hobby, and they're both having a whale of a time posting stories about their trips and nights out. So clearly this is why she's not bothering to reply.
Am I being really grumpy to just not bother pursuing this anymore? I'm sure she'll get in touch once the new friend is gone but it'll be too late as I need to book time off work etc.
Do tell me if I'm being a mardy cow though 
We're both 30 if at all relevant!