my ex had agreed in writing to the weeks i am allowed to have my daughter for my allowed two full weeks vacation. since i have gotten a new lawyer and am getting the support agreement modified because of my ex is now working and getting rental property income, she has said that my daughter now cannot come with me for the agreed upon times. i have already purchased airline tickets, hotel and tickets for disney world. can she do this if i got the agrred upon dates in writing? we live in new york state.