FRANCIE: I saw her walking off with . . . who was that, her brother?
LOUISE: Paris doesn’t have a brother.
FRANCIE: Really? Well, she certainly seemed to know him.
Jamie is hanging around Chilton, being a distraction to Paris again and giving Francie an opportunity to take her down a peg. Princeton doesn’t go back after the Christmas break until mid-January, suggesting this episode takes place in the first half of the month.
However, it’s something of a mystery what he is doing in Hartford, which is a fair distance from Philadelphia. Is he staying with Paris, since she spent Christmas with his family? And why is Chilton letting him turn up during the school day? Don’t they have any security? Why are they letting Paris leave with him? What ever happened to Chilton being a really strict school?
The Annotated Gilmore Girls 