Have you ever talked to her about leaving her work at work when you are together?
I know its nice to listen to your loved one and try to offer support, everybody should be supportive but I think you deserve her undivided attention when you get the time to be together.
If she loves you like I can tell that you do her perhaps if you explain to her that you understand her problems at work and give her an hour to talk about it then she must agree to allow the rest of the time for relaxing with you.
I think that would be fair and also show her that you prefer to enjoy HER personality and person rather than her co-workers. She is allowing them to invade her heart, mind and personal life. That isn't very healthy for her.