Okay, I invited my sister to visit myself and my daughter this summer on a trip we are taking. I thought she'd just come for 3 days or so, but she's getting ready to make her flight arrangements and she's thinking of staying about a week! I haven't called her back yet, my daughter is livid and doesn't want her auntie to stay that long. My sister can be a very difficult person to get along with. The last time we vacationed with her, she got mad at us on the second day and gave us the silent treatment for the rest of the week, and didn't speak to us for almost a year! How do I politely, without ruffling her feathers, ask her to just stay for a few days? She has not only behaved this way with us, but also with my mom and one of her dear friends, all at different times. She gets angry about some little thing, then proceeds with the silent treatment/cold shoulder the remainder of the trip. I think she wants to come for the entire week because the airfare rates are cheaper for the departure/return flights. I don't want this trip ruined, especially for my daughter's sake (she is almost 18 and graduates high school this year, this trip is for her dance competition).