Notes for the Kotel

My family is going to Israel. R. is very excited. She has learned quite a bit about Israel, having been first in a Jewish preschool and now in a Jewish Day School, and is ready for the trip. One special thing R. has on her schedule in Israel is putting notes in the Kotel (Western/Wailing Wall) for her class. The notes are in a ziplock. She knows she has a very important job. Many of them have the word "private" written on the outside and R. made it very clear to my husband and I that we are not to read her friends' notes, that they are private prayers and requests to G-d.