It is simply not possible for her to not work with him or around him. However, the situation is a little different. They don't work together on a daily basis. He is like consultant and comes in 1 day a week and she doesn't always see him. Both are working in a group that works on a specific project, but it's not one-on-one and that will be limited. Also, she used to work 1 day a week at his office and she quit doing that and quit texting, phone calls and emails. It's not ideal for me, but honestly given things (her job is very specialized/ the economy), she is really doing the most she can do.
Patience is bitter, but its fruit is sweet. --Jean Jacques Rousseau.