I would ring her and try to clarify things. Yes, she could be a selfish bitch or full of faux care and wanting you to fund her hen do or she could actually be caring about you after all.
SIL's (my DB) best friend at the time had a hen do on a barge (which wasn't stationary!), she invited SIL to this, 2-3 weeks after she'd given birth, and wouldn't take no for an answer, SIL was chief bridesmaid and had arranged everything for the hen do, which was complex enough as it was (SIL was the only BM, not a big party of them).
SIL rocked up to the gastro pub/restaurant with her baby, knackered, full of leaking breastmilk and still her best friend tried to get her to come to the hen party...SIL kindly stayed for about an hour or so at the venue but then wisely chose not to come to the hen part on the barge. I was on the hen do, it was nice enough, along with rest of the family, apart from SIL's DM who was staying with SIL to help with the new baby.
The best friend also invited a load of her parents family friends from an Eastern European country to attend her wedding (bride was EE and her groom is English) and when most if not all couldn't attend, invited my DP's as last minute 'extras' who wisely declined.
Fast forward a few years, the best friend is no longer a best friend, she became an utter nightmare when over Covid she got into a row about work/helping with work (they were on a project together, not working together anymore officially) and SIL realised that sadly her best friend didn't have her best interests at heart, especially as SIL now had a toddler. They tried to patch things up after Covid but it won't be the same now.