Interesting with the grandma. Just shows how much these things put others in the middle of all of this.
As far as seeing your W with OM on SM.
First, SM is one of the biggest triggers to LBSs. I suggest avoiding all SM until you get to a better place. No good can come from it. And it really sets you back. I know you insist you weren't snooping, but come on. A small piece of you probably was. So just avoid the temptation altogether, and get off SM for the next few months at a minimum. (I advocate deleting SM accounts completely and never looking back, but for some reason people see SM as a necessity these days.)
Work on detachment (google: self-differentiation), it is so much of a healthier place to be.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018