As a WMG subpage, all spoilers are unmarked as per policy. You Have Been Warned.
She just doesn't care that he kills people, he's her dad and he possibly is just cuckoo and gets her souvenirs, by any means necessary.
The radio broadcast at the end of the film states that four fatalities were confirmed, but there were actually five victims in the film: Gavin, Asher, Taylor, Quinn, and the unnamed girl who was killed in the Deform School maze. While it's possible that one of the bodies had yet to be discovered, it might also be that one of the victims was not as dead as they might have seemed. Taylor and Quinn's deaths were cut away from very quickly, so it's possible that one of them was not wounded fatally. Asher's injury might also have been survivable, though in his case that might be an instance of Cruel Mercy.
