There is a common misconception that stuttering equates to lacking confidence or being anxious when it's far more complex than this. She sounds really ignorant and unwilling to educate herself when any decent person would be patient with you and not make you feel any more embarrassed than you already were by the sound of it. If someone has to call you too emotional for trying to "help" you instead of trying to imagine how you must be feeling and still let you room to talk then they are really insensitive, impatient and offended by the sound of stuttering when you're still a human being who deserves patience, stutter or not.