Ok.. how about NOT putting this onto the pile?

Ok, you had a panic attack. It will pass...and if you work on this until it's mellowed out, it won't add to being afraid of strangers and how they might be rude and inconsiderate in the future.

This was an isolated event, this time. What did your friend say afterwards?

You might benefit from printing out the 10 common cognitive distortions that are stick posted at the top of the (Psychotherapy) forum.

Right now, you are catastrophizing. You are expecting things to go down hill that it's all like it was before and going downhill...

You can stop that thinking, you can...you have that power. Even if you say STOP out loud... and correct the thought, it will help. (Thought stopping.)

This was an isolated incident for you today. Yes, it caused a big reaction in you. But you weren't harmed. They were just words. Would you invite that lady to lunch? Probably not, she doesn't sound like a nice person, does she? Maybe she just had a fight with her husband and took it out on you?

It sounds to me like you handled yourself really well! You didn't spit on her did you? You didn't beat her to a pulp did you? You were gracious and kind... and did well. And it is in the past. It's over.

Hope this helps.