Some of the comments at this link are pretty funny.
Mystery Teen With Amnesia Searching For Her Family - Gothamist
Are you thinking of Laci (Peterson)?
the last thing she remembers is getting her flu shot!
Maybe she's trying to escape whoever let her cut her hair like that.
How many flu shots does one person need????
The family said it's not the first time she disappeared and then later was found with apparent memory loss, the station reported.