I'm thinking the ending didn't have to be depressing. In real life all good things come to an end. This story wasn't intended to leave you feeling Pollyanna. It was intended to give you a different perspective on rape-suicides-lies and a taste of what the other side live like.
I found the characters flawed. It was like I wanted to shout at them and hit them. Flawed because they don't fit your concept of a storybook happy go lucky life? Wanting to shout at someone and/or hit them by the way is criminal - we can't have that now can we?
Keep the questions coming . . . and be safe out there!