PARIS: My mother was a Puff, my aunt was a Puff.
As with the ten generations of Gellers who went to Harvard, Paris also comes from a family of Puffs, and thus feels she “needs” to join them to continue a family tradition. There’s a sense of panic from Paris that Rory is “stealing” her rightful place in the world, or that Paris cannot really succeed unless Rory fails.
The Annotated Gilmore Girls 