You said she enjoyed it though. Now you’re saying she was anxious and distressed.
You don't think it's possible to be anxious and distressed, then have those feelings alleviated or reduced temporarily by a party, then when everyone goes home and you realise the fun is over, it's night time, you're still in pain and restricted, those feelings could come back, sometimes harder than initially due to the comparative shift from happy to anxious?
I'm not sure why you stayed in hospital overnight with a teenager who's old enough to drive,
The Op said 'young teenager'. Not sure she's suggested her Dd was driving?
Too tired to socialise at your child's birthday party - which she was badly timed but she enjoyed - but still managed to go to the hairdressers?
Oh come on. Sitting in a chair having your hair done for an hour or so and having to unexpectedly entertain 40 people in your home and then deal with the clean up when you're exhausted are completely different. One involves sitting. The other involves a huge amount of emotional energy if you aren't feeling up for it. She's already been called a martyr for helping her Dd but she takes some time for herself and that's also the wrong thing to do?
There's clearly no winning.