Uh, is she stalking you online? Because it sounds like she is. Unless you have her on FB or something..
She's nuts. Wtf.
That's the feeling I get too. I googled my name and noticed anyone can find my pinterest account. It has a file for my DD birthday party that we just had and other things like educational stuff for the kids, arts and crafts.
The emails she sent 2 years ago were almost as bad but they were just mean, not accusing me of neglecting, and getting my children drunk. That's when we cut off contact.