Most of the cabincrew who join the airlines in the middle east are very young and dont know anything about what life is in this countries. They expect to be nicely treated as they were at home. For many of them is the first job and they never lived away from their homes.
Sadly, once they get here it's a diffrent story. They have to face the cultural shock (language, religion etc), loneliness, some of them are maybe abused which can easly lead to depression and other things. It's not easy to put together so many young people from diffrent countries into a completly new enoviroment for them and expect everything to be fine.
The companies should probably invest some money in assiatance programs for cabin crew and create activities in which they can get involved and feel part of some sort of social life. I know that EK has started already to do this for a few years. It's probably not enough but it is a step forward!
Im not trying to find an answer for what happened in Doha to the poor girl. I just explained briefly what's going on here from a cabincrew point of view...
Im really sorry for the korean girl....
RIP...