Penelope's drunkenness
After she finishes that entire bottle of vodka and falls onto the mattress from the roof, she's puking and incoherent (obviously), then Olivia gets the text from the chick who's hiding out (while Penelope is still vomiting in the background). They head out to find the girl immediately, and when they do, Penelope confronts her, walking and speaking coherently like she's 100% sober. The fuck?