My T once told me something she also wrote on her Facebook wall (a therapists-kind-of-page though). I had read it a couple of days earlier and I felt like I couldn't lie about it. It was as if she caught me, you know. But on the other hand, I would have felt terrible if I would have said nothing.
Still wondering whether it was on purpose actually...

But I'm actually not too sure she will react in a bad way. Every T who knows a bit about how clients can be... I mean, you're definitely not the only one! I'm sure a lotttt of clients do that. And also, I think that someone in that kind of profession only posts things that are meant for the world outside to be seen. So, no reason to be upset about that, right?
And if you say you're kind of 'obsessed'... She can work with that, I hope. If she takes some distance from it and doesn't see it as a personal thing.
I hope it works out!