Here’s the thing. I don’t think this is about the dress. I think you’re feeling that she’s ungrateful of unappreciative of what she’s getting in life, not just for this trip.
So instead of thinking about right now, I would think about the future.
She’s 13. Does she do her own laundry on a regular basis? My kids have done their own laundry since they were 10, yes folding it and putting it away has not always been neat and tidy but they’ve gotten better over the years. I still have to remind them on the weekends to put a load or two in, but they do the whole process themselves. They’re also in charge of clearing their plates and getting them into the dishwasher and they take turns emptying the dishwasher. They help with the dog stuff and keeping the house tidy. They help with cooking on occasion. They need reminders, but they do it without complaint (this took awhile to work on, but worth it). If they are very busy with homework or activity we will let it slide, but they know their responsibilities and they still have time to do what they need to do and want to do.
And this is just what works for us—my kids don’t get an allowance: we give them money when they need it and thankfully they’re pretty reasonable about it. If they ask for something that we don’t think is a great choice we will say they need to use their own savings from holidays, birthdays, earned from babysitting or pet sitting jobs. But there isn’t a direct monetary exchange for chores, we want them to know that doing chores is just part of being a family.
How old are your other kids? Do they do chores? If not I suggest getting your family on board with helping out with the house. Even little kids can match socks and tidy up.
So get the dress, ask her to help out with the prepping and the post trip cleaning, don’t freak if she doesn’t do X number of hours for you. Look at everything globally and see how things may need to be changed for the family. Have a good trip