What would you do?

My sister had to postpone her bachelorette for the rescheduled one she gave me a house to rent that has a full cancellation policy of 30 days.

Her bridesmaids didn’t answer about traveling for it, even though I know they’re fine with it because they’re all attending a wedding out of the country. She basically said to just book it to have it and she’d speak to everyone about going and we can cancel if needed.

I went to book the house and they want payment in full which I don’t think I can do because I decided to go back to school and just paid for classes.

What would you do?