Can I set my messages to private without my mum knowing on facebook?

[aryalaris]

1. Send private messages to friends profile>send msg
or
2. Write it on friend's wall, but make sure to change your wall post settings so that only you and the recipient can see it.
or
3. write on on fb chat it's also private
or
4. in privacy settings you can set who do you want your posts to be visible to i. e. : friends, friends or friends, custom, choose custom and in the first box put names of people you to see the message and in the second box put your mum's profile name under: do not show to the following tag
or
5.write a private msg press ctr+a or in apple apple command key+a while choosing recipients and still holding ctr uncheck your mum.