Character mistake: The officers count the inmates and say there's 10 missing. There are indeed 10 inmates hiding in the pool. However, Pennsatucky and Chang had escaped the prison. The officers counted Linda as an inmate, who had been hiding in Litchfield the whole season, and wasn't on the list. That would make it 11 people missing, not 10.
Orange Is the New Black (2013)
Episode list - season 1
Starring: Jason Biggs, Kate Mulgrew, Taylor Schilling, Michelle Hurst
Genres: Drama
More mistakes in Orange Is the New Black
Piper Chapman: Sorry about your dildo, Boo. Cost of doing business. I'll make it up to you.
Big Boo: Damn, Chapman. That is some stone-cold shit.
Piper Chapman: I don't fuck around.
Question: Don't some of the inmates, who're mentally ill, belong in a prison psych ward?
Answer: You would need to be more specific as to which inmate to get an answer as to who possibly belongs in the mental ward. In general; usually the only mentally ill prisoners who go to the mental ward are inmates who show obvious psychotic breaks like Loli and crazy eyes as, with the conditions of prison, it's often difficult to tell who is mentally ill and whose frustrated from the conditions. Many of them are also only there temporarily. Crazy Eyes, first example, was in the mental ward. Her mother fought and won to get her out.