How to block access to my timeline without letting someone else know?

[Takumi.N]

I just transferred this US branch and my current project superior made me add her as a friend on facebook. She literally stood beside me until I added her; then she immediately accepted the request. After that, she comments on my photos and posts.

I have tried the "custom" privacy settings which excludes her from seeing my content. However, we have mutual friends and she has noticed that they are getting access to my posts while she is not.

I do not wish to unfriend her because of her position.
Even though we are in different departments, there is a high chance that I'll be teamed up with her again. Seeing her daily at work is enough. I don't need her in my facebook.

How do I block her without letting her know?!

[thebigbang..thwor]

just block her, she doesn't have control over you
Just say that you don't know why she has no access to your facebook