Continuity mistake: When Sabrina and Valerie are in the cafeteria sitting at the table Valerie is holding her drink, the shot changes and she is now holding a spoon. (00:05:30)
First Kiss - S1-E17
Visible crew/equipment: At the end of the episode when Harvey hops away, a boom mic is visible. (00:21:55)
Third Aunt From the Sun - S1-E7
Visible crew/equipment: When Sabrina is singing the Funky Song, you can see the fake room in which this scene was filmed. (00:18:35)
Revealing mistake: Near the end of the episode, Sabrina accidentally hits the football player in the eye by jumping happily. But you can see that Sabrina did not even touch him. (00:20:10)
Answer: Those are her roomates. The first season Sabrina was in college, she moved out of the house that she shared with her aunts and she moved in with 2 girls plus another guy. I think her aunts went back to the other realm since the 2 actresses (Caroline Rhea and Beth Broderick) who played them left the show. The guy roommate also left the show the same time as Sabrina's Aunts. Then Sabrina and her roommates moved into the house.
Dan Sgambelluri
Hilda got married and Zelda became 8 years old again so that Sabrina could have her live life back.