When rebound girl remains friends with family?

[Donna M]

My husband & I have been married 15 yrs. we separated for a yr. bc of various things. I wanted it. Of course rebound girl was on call. Any way, he was seeing her long distance for a year. After that I was back,he was trying for 6 months to break up with her. Now it's over. They don't talk. I have been checking her fb to see what she says or if she is still friends with the fam. She is friends still with all of them but my hubby. It drives me nuts bc she is the reason I won't be friends on fb with them. She was stalking me entire time my hubby and I were separated. How I know that? She would ask things about me that I would post on fb and sometimes I was joking with friends or I would get emails/notifications that she was checking me out. Anyway she posts stuff as she has let go but in reality she hasn't. She is still friends with all family members. Even though she knew some of them from before she hadn't been around for the last 16 yrs also some of them she didn't know from before. She is still communicating with them. Why? If it was me I would remove everyone. Considering my hubby dumped her. What thd heck she wants? It's really weird for me.