Co- worker that is obsessed with the job

Has anyone anyone ever met a person that is so obsessed with their job that even on their days off they call fellow co- workers to ask what’s going on? Let’s call her Molly. Molly is Middle Aged and has been at the job for two years. I befriended her due to the fact that she comes off as friendly and helpful at first. However, I made the mistake of giving her my phone number😂 she suddenly begins to call everyday after work to talk about the job and other co workers. Even on my days off, she will call to complain about our managers ect. I personally like leave everything at work when I leave. Not Molly though, she will keep you on the phone for hours. Talking about the same thing. Molly is problematic and controlling so she tends to bump heads with a lot of people at work. She recently got let go for getting caught bad mouthing the manager at work, security had to escort her out. Anyways she still calling me. My question has anyone dealt with a person like this? ? It’s the strangest thing .