Again, it's probably nothing. Kareena said he was drinking a lot, and while Annette may occasionally overdo it - as much as she looks like someone in his mid-twenties, she is still a kid away from home for the first time underneath - what seems like overdoing it to her is something her body can currently absorb. And despite being young, she's pretty together.
But, hey, if she decided to get on a train or plane last night and visit one of the other Inn people, could you guys have her to call? The roommates are worried.