HD- Be on alert-- if your planned trip is still a month away, be prepared for her to precipitate some sort of crisis/situation/episode that will make it impossible for you to go. It may be some emergency situation that will make it necessary for you to be at home, or it may be an emergency expense (of EXACTLY $200) that she will expect you to sacrifice your $$$ to pay for.
A month gives her plenty of time to set up an "unforseen" event.
