How do I get rid of this feeling?

[tai38]

So during my field trip, our class when to a Water treatment plant that deals with human waste. So we were given a tour and went through one of the buildings, and knowing where we were, I really didn't want to hold the door so I hurried when it was open, and naturally it almost closed on the person behind me... and this person is someone I really don't like but I didn't know she was behind me until, from behind, she said to my friend and I:

"Thanks, bitches!"

She obviously tried to make it sound like a joke, but the thing is... I haven't really been called a lot of names before in my life, so I guess I just didn't know how to respond to that. It didn't bother me then, but now that I keep thinking about it, it kind of does. I did talk with my mom about it, but I know people always say "Don't let what others say bother you" but with this kind of thing, it was probably best to take action ... I just feel that now it's too late to say anything to that girl now, so ... what's a good way to get rid of this ... I guess, inner turmoil?

[kendon19]

let it go.

[caspar99]

The name "*****" is thrown around all the time. She's probably forgotten about it anyways. And do you think you're a *****? You don't seem like one since you're upset you were even called one for something you accidentally did. You're not a ***** so don't let some other girl tell you that you are.