This is a very odd story. Why were they there so late at night? Why did they pick her? Why did the father take so long to get help that by the time he returned, all 5 had had a go? I have a feeling there is more to this. Like, rival gangs, or a pre-arranged meeting, drugs... I’m just speculating, of course.
I agree it seems a bit odd. It could just be bad ir incomplete reporting or there could be more to the story. There are conflicting details in the various media reports I have read.