I'm a fourth-year Ph.D. candidate in the social sciences.
I've decided to replace one person in my doctoral thesis committee because she is not giving me any feedback or responding to my emails in reasonable times. I can go sometimes for almost a year without any feedback. Since I have to move forward with my degree, and I've been delayed for almost a year because of her, I have to inform her that I have replaced her. But I don't know how to phrase it in order to not offend her. I need to be very tactful and diplomatic here.
Any suggestions of how I could go about to tell her?
EDIT : She was replaced, I had to tell her by writing, and she was not offended at all. So it's all good!