It's been over ten years.

Roughly ten years ago, my grandmother stopped talking to me. I can't say it's my biggest interest in caring about it, however.
I got something from her when I turned 18, which is 3 years ago. I don't recall what the hell it was, to be honest, and it's not my biggest interest in finding out what the hell it was either.
Now, 3 years later, she sent me a message on Facebook (by the way, I'm rarely there to the point I tend to forget I even have a Facebook). What'd it say?

"Grandma misses you. Hugs from grandma."
I was like "...Are you freaking kidding me?"
I replied with "Okay, who are you two then?" (She used her husbands account for some reason).
I got as a reply "Don't you know who your own grandma is? You used to come here and bake when you lived in Arboga (a city I used to live in). Hugs grandma."
I honestly can't say I care even a little about that. I don't want to talk to that woman ever again. She's lied to me and about me, as well as talking shit about me and to me. I have no interest in finding out her ever again. Call me cold if you so please, it's not really my biggest interest in caring too much about it.