His misses already has the full scope of things, she knows what time the event started, what time it finishes and she knows the travel time between the event and home,
She probably even told him not to drink too much and get an Uber home, so she probably even monitoring that account too,
But i recon she’s given him a warning not to bring any of his drunken mates home with him tonight, otherwise all hells going to break lose.