Girl on Facebook is sort of stalking me?

[Xysa Zing]

For a while now a girl on Facebook (who told me she had a crush on me) has been sort of stalking me on there. Every status I post or am tagged in she likes/comments on or both, even when they're nothing to do with her or anyone she knows. I know it's not that important, but it's a bit embarrassing when she puts overly-friendly comments on stuff or likes my friends' comments or asks them questions when she doesn't even know them (sometimes questions about me).

I've already blocked her on chat so she doesn't know when I'm online, but everything I do or like she likes or comments on and it's getting really wearing. Can anyone help?

(I don't want to block her completely, and she doesn't have any real reason for doing this- she has plenty of other friends but just seems to be fixated on me.)
'Well if you have not completely blocked her you must like the attention.'
- So why am I asking this question then? I don't want to completely block her because she is still my friend. Simple as.