let me tell you about one girl I worked with.
She was 13
Regularly playing truant
Had threatened suicide
Had been brought home by the police drunk
Had attacked both her mother and father
Had ran away from home and been found by the police and her father in a house being used by older prostitutes
Had tried drugs
I worked with this girl and her family. When I first met them it was clear the family was troubled. The father described his 'perfect little girl' who had been fine until she turn 11 and then all hell let loose.
I spoke to each family member separately to get a perspective.
Mother told me the marriage had problems, she had nearly had an affair and had been caught out by her dh a couple of years previously. they had split a number of times since.
Father told me he tried his best to provide for his family - worked lots of hours - but felt his dw didnt care for the house and had no interest in the family home (it was filthy and very untidy with brokedn furniture all around) He also had recently had feelings that he might be bi/sexual.
Elder brother (17) worked sporadically but was a gambling addict, stealing from his parents to feed his addiction
And the young girl told me that she resented her mother for having an affair. She felt her dad was weak and neither of them had any time to give her boundaries as they were so engrossed with the drama of their own lives (her words - she was hugely intelligent)
She felt they didnt care enough to stop her.
The point is, they did everything they could to stop her getting drunk, hanging around dangerous areas etc...but by then, IT WAS TOO LATE.
That's the longwinded point I'm trying to make I guess. By the time her unsettled little childhood started taking its toll, she had gone past the point of feeling herself that her life was salvagable. It was already crap so a bit more crap wouldnt matter.