What does it mean when a girl apologizes for no reason?

[LinkxPeach]

The other day, a girl apologized for no reason. Any reason why?

Updates

+1 y

It was at a grocery store, and this girl apologized for no reason and I don’t know her and she’s apologizes for no reason.

[BeMuse]

I don’t know… You’d probably have to feed a little more information about the conversation and background for anyone to give you any insight into what is happening.

[Ken201]

It means there is a reason but you won't be told it the other girls know.

[kibbenkat]

She’s anxious, nervous, or may be abused at home.