2YO still talking about incident with another toddler 3 weeks later

We were at the library playing in the play area with other children, my daughter was behind a toy when I hear her scream. I went to get her and she seemed OK, just startled. Then I see, she had a bite mark just above her eye, and the parents of the boy who bit her were there apologizing profusely. I felt it was just toddler behavior and I was not concerned, feeling lucky it didn't brake the skin and wasn't a little lower that would be in her actual eye. The bite mark faded within 10 minutes and she cautiously went back to playing but only with me very nearby, the boy left right after. She told everyone about what happened to her that day, and the day after "boy, eye" and then pointing to her eye. And then she just kept talking about it, it made me a little concerned and I thought it was a good learning opportunity. I told her, if someone does something to your body you don't like you tell them 'Stop'. So now she goes around saying 'boy stop' and 'boy eye' and 'eye'. It has been over 3 weeks and she is still repeating it about once every other day or so. Is this normal or is she traumatized that I should be concerned? Any advice on someone else having something similar happen? How did you handle it? via /r/Parenting http://ift.tt/2g5MnhD