I'm a 13 year old girl, and it's almost spring break. My family and I are going to a waterpark, and my friend, Caitlyn, isn't going anywhere. I really want her to go with us, and she wants to come.

The problem is her mom. I know that if I asked Caitlyn to come, her mom would say no. She would say this because her mom always thinks that "It would be to much trouble" if Caitlyn came with us on a trip. She thinks it would cost to much or something. I don't know what her problem is. It wouldn't even be to much money. How can i convice her mom to let Caitlyn come? PLEASE HELP!!!!!