First off congrats on being full! I wish I had your problem. Aside from that, I agree with the majority as well, you did sign a contract, collect a deposit and you do like this other family. IMO it is the right thing to do otherwise what is the contract for? Also, one thing I have consistantly noticed is that same age/sex kids don't always play together. From what I see, the kids who are more like minded/attitude come together so I wouldn't be so concerned to have another girl your daughters age.