I don't know why people are saying to quit on this Pdoc after one bad meeting.

This could be good for Amanda to stick up for herself. Just because things are difficult, doesn't mean we should quit.

Even though my Pdoc has asked hard questions, sometimes I refuse to answer (eg. She knows I've self harmed at times, but I refuse to tell her where, regardless how many times she asks. I just keep saying, "I don't want to say.")

If you can tell your Pdoc - "I need to get to know you a little better first before I go into detail about some things", it would probably go a long way in helping you put up some boundaries. Or you can ask him if he can write down the questions and you could write down the answers with as much or little detail as you want.

Another Pdoc is going to ask you about your history all over again, so I don't see how changing Pdoc's will really help you in the end. You'll eventually have to share or put up boundaries against sharing details at some point. To me, it seems to make more sense that you just go back to this one and say "There are some things I'm not comfortable sharing at this time."