Gigi,
I like how you say "if it's allowed" like she's some sort of deity instead of a businesswoman. She wants your money (or father's money, at any rate) and she's hardly going to make a fuss about getting it three weeks later if she doesn't have any alternative.
On the other hand, whatever superstitions see you through. Make an offering to the ballgown gods and maybe Witch Weekly will call your fashion sense inspired instead of trite.
How are classes?
Silas
PS: Sidelines or no, I've seen the insides of more ballrooms than you have. Maybe you should let me design your dress.