When kitty has the fridge open the light is off, when she takes the milk from Leia and puts the milk back in it the light is on, after red hugs Leia, kitty is back in the fridge and the lights off again.
When talking about 'Beverly Hills 90210', Leia imagines herself as 'Brenda' and the setting is in high school. At the time of 'Beverly Hills 90210''s airing in 1995, the characters had already graduated high school and 'Brenda' (played by Shannen Doherty) had permanently left the series. However, the series was airing re-runs (in 'syndication') on certain channels when it wasn't airing new episodes.
The 53140 zip code is in Kenosha, Wisconsin.
Contrary to what Red says, Leia would not have been able to get her learner's permit in Point Place, Wisconsin, as she lives in Chicago, Illinois, with her parents, Eric and Donna. Leia would have to prove Wisconsin residency, yet all her current school documents are presumably Illinois addresses.