“She’s sort of my sister”

RORY: Well, I don’t know. I mean, I know it’s weird, but I kind of wanna see Georgia. She’s sort of my sister.
LORELAI: She’s more than ‘sort of’ your sister.

Georgia is Rory’s half-sister, but she already doesn’t feel very close to her because she’s Christopher’s daughter, and she and Lorelai have been fairly distant from him since Sherry got pregnant and Christopher dumped them.