If you can, tim down the work hours for the next week or two and spend some time with her. Go to the movies, take her shopping, go out for dinner. Keep SHIII down to a minimum (I know it's hard but try!!) Put off installing GWX to reduce temptation.
A salior needs a friendly port to come home to, not an enemy occupied one!!
Show some love and you will find her more acceptable to SHIII in the future