In this final act, Callie and Jess made peace, after ditching her at the party, to go spend the rest of the night with West, because he likes him (that’s how we know that he’s gay).
After he made peace with her, Callie had to make peace with her best friend Liz, for ditching at the party her to go look out for Jess. Later that day, Callie invited all of the crew that participated to the play, to celebrate their achivments.