Dana (Sigourney Weaver)’s Timeline and Summary

She tries of dodge her geeky neighbor Louis.
Dana finds a Hellish alternate dimension in her fridge, complete with a terror dog named Zuul.
She goes to the Ghostbusters for help.
After Peter makes a weird pass at her, she kicks him out of her apartment.
Dana agrees to a date with Peter after he brings her some info on Zuul.
She's possessed by Zuul.
Zuul/Dana gets it on with Vinz/Louis, and the two prepare for the coming of Gozer.
She emerges unscathed from the ashes of Zuul.
Dana kisses Peter in front of the adoring crowd.