I'm 32 and I kinda did this too! So I don't blame her having a meltdown at 5
Mum took me to the hospital cause my partner was doing the school run. We took a card game to play to kill time before I went in (I had to wait 2 hours) so take some favorite little toys or games to do incase there is a bit of a wait.
Maybe play a game with a favorite teddy today, pretend teddy has to get his tonsils out and play doctors. Show how he has to lie down and have a rest while the 'doctor' does the operation, then teddy can wake up in bed and get lots of praise for being so brave!
Or take her out and buy some icey poles to put in the freezer for her to have when she gets home from hospital so she has something to look forward to
Please let us know how she is doing tomorrow