For the first 3 or 4 years post DDay, I ran into the AP at least once a week in some capacity. I always endeavored to ignore her....and except for a few confrontations, I could do that. But, it was incredibly activating. Now I'm working toward benign indifference....hoping that she'll return to being the random stranger she was before the A and her ingratiating herself to become my friend.
Having a plan worked well for me and FWH. If we were together, he would physically show affection. That helped me to ground myself. My heart might be racing, but that touch helped. We came up with that together. He would check in with me and I could decide what I wanted to do to feel safe. More often than not, I would run into her on my own. In hindsight, I do believe she was stalking me, but had no way to prove it legally. When I ran into her alone, I would phone FWH and tell him....and vice versa, immediately. When he was able, he'd meet me.
If he wrote serial killer type notes, no wonder why you're anxious.
I DID lose it a couple of times, but never around children. Figured she deserved it. I didn't/don't care. It's been so long since we've had a run in now, that I wonder if it will be quite as activating as it once was.