Setting boundaries

Hi:

For the last year, I have decided to finally cut off a friendship with a woman who has moderate levels of autism and her mother because of the friendships with very unhealthy.

Examples

1. The friendship was wishy-washy with those two

2. They were not supportive and stabbed me in the back several times

3. My former autistic friend is very unpredictable and has said and done some nasty things

There have been at least a few times where my former friend tried to reconnect with me in the last year but I have told her twice that I don't want a friendship with her. Today, I found out that she tried to add me to one social media page. I sent her an email with her mom cc'ed and explained that she is not to try and pursue a friendship with me.