My six year old is saving money to attend a Suzuki Institute next year. He really wanted to go with his friends from his music school this year, but I don't have the money. I feel bad about it, but mostly because I can't make it happen this year. I don't think it's mean asking him to pay for it next year. If I didn't, he wouldn't be able to go. I think it's the same for your daughter. Letting her pay this year means that next year you have the money to let her go, even if she doesn't make as much money.