Health Forum

Well, it sounds like normal sister stuff to me. I have two girls and my younger daughter likes to "borrow" her sis's things sometimes. I would say just sit down and have a talk with her about it.
I am all for sharing, if at all possible, but she should respect your wishes and ask first. If she continues to take things without permission, lock your room or put your things away somewhere that she can't find them. I hope she will listen to your wishes. Having a sister is such a special relationship. Mine are my best friends, but we're grown now.