child wanting to live with the noncustodial parent

[joacqua]

Hi I just wanted to know how it goes when a 12 yr old wants to live with their father I am the stepmom and my dh's daughter wants to live here with us we live 10 minutes from the mom there are 2 kids from this marraige but only the older daughter wants to come how do we go about this I am fine with it but I think the bio mom is gonna freak any advice will be great and then does child support change?