You know, you may be dead on, V. Her grandmother added me right after our split and I accepted. Her grandmother then posted a comment on one of my posts that she loved me. That very well could have been her. I have removed that person too now.
What if it were her grandmother?
There are moments in this life when you are so confident in the rightness of your actions, that not even for a second do you consider the option that you might be wrong.