I know she is in contact because they have meetings with their job at least 2 times a week. She is also a coordinator and he is the Principal. I've asked on several occasions if she spoke with him and she admits to speaking to him whether it is in a meeting or in passing down the halls.

She refuses to leave the job, ask for a transfer, and she admitted to still having feelings for him a couple of days ago.

Yes, if I file due to her working the job then that will be an ultimatum. However, it may be the only way I can fully heal and move forward. As I detach it drives her crazy and she becomes extremely jealous of me doing things alone or going out with friends.