Facebook privacy settings. Question about who can check posts?

[JC]

Ok so on my facebook I customized the settings on who can see the posts that my friends put and I left my sister so that she could not see them does that mean that if she comments on my wall she will not be able to see it either? Therefore realizing that she is blocked from seeing my friends posts on my wall? pls help before its too late

[cotton candy]

its like this. she can see everything she writes, and she can see everything u write. but she cant see anything your friends post on your wall.'

dont worry. she probably even not notice. hav fun hiding from ur sis