I don't know her situation specifically, but what I can say is that if you're gonna quit a forum, this is not how you do it.
The correct way to leave a forum is to simply disable all notifications to your email inbox and then stop posting and updating your threads.
If you feel particularly bold, put out a message on your profile saying that you're done being an active member and if you have important threads (stickied ones, for example) the moderators will take appropriate action with the threads to ensure they are maintained by someone else or a new thread is started to replace the old one.
What you don't do is go from thread to thread deleting your own posts. This is damaging to a forum as it creates gaps in threads that may have been coherent before but are no longer with the context removed. This is the behavior of a child getting angry and spiteful about something.
Oddly enough I thought she was one of the more mature and thoughtful forum users on this site but I guess I was wrong.