I'm receiving Facebook Notifications From a Friend that IS NOT A CLOSE FRIEND? Why!?

[Matt Leber]

You may have "subscribed" to her feed. I've accidentally done that a few times. It updates you about her because it thinks you have deemed her important enough to "follow." If that's the case, unsubscribe.

Another reason (and this is just a theory) is that maybe she looks at your facebook a lot or you've looked at hers a lot. Facebook can creepily tell those things. They have a lot of information about you whether or not there is a lot on your profile. I read somewhere that facebook can tell the probability of your relationship succeeding based on your and your significant other's interactions.

In any case, you can always change your privacy settings to exclude specific people from seeing specific things such as your whereabouts and updates. You can find the tools for that in your privacy settings.

Hope this helps!
Lauren