Are you upset because your T used the word "cutter"? I mean, I think your T was asking if the person understood because she also currently self harms or has done so in the past. I think a lot of people who never have don't understand the true emotional pain behind it. (I SH'ed for awhile so altho won't pretend to understand your very personal experience with it--I believe everyone's experience is different--I do have an idea of how you are feeling.) If you find the label "cutter" to be insensitive, I think you should tell your T how you feel about it.