I would do nothing. If our bm tried to search for me, I'd imagine she'd get pretty bored pretty quickly.
Just think she must feel rather useless, if she's wasting her time trying to find you online. Guess she must think about you a lot! That's her problem - not yours.
As for your pics, or anything else you might want to post - just remember, it is the Internet, and anyone can find things they want to find, if they try hard enough. It can be a total stranger you've never heard of, or it can be your bm. So just go according to your comfort level with that.