Selfless or Selfish?

Hello ! I’m struggling with my teens choices with spending money she earns from a part time job. We came back from a 7 night vacation from Disney World. I am a single parent doing the very best I can. Also, managing her accounts, I allowed $1,100 for spending on the trip. Well, I didn’t get an ice cream let alone whatever. But she did spend everything on her and a friend. I explained many disadvantages of this as well of how this behavior is selfish. How would you feel & handle this?