Good for standing up for yourself and addressing your stutter to her. Does it bother you that you get so worked up and overreact? If so, it's a complicated road, but I thinking learning to accept your stutter makes you more comfortable and helps you swallow the bad reactions a little better. I used to get really angry. Even cursing really loud at a deli worker who was laughing at my face and storming out. I think part of it is maturity, but i think acceptance help you get through though those bad moments. Also, its cliche but you having a short memory helps. When these times happen to me I try to reflect about how far I've come with my stutter and how I've grown. Bottom line, it's up to you how you react, obviously something that makes you feel positive at the end of all of this is probably the better option