and that no one helped her as she cried for help, and how afterwards, everyone blamed her or tried to ignore what had happened:
"Where are the heroes
I my time of need
Is my crying abandoned?
Or have they gone
Oh no
They just tend to stand
Out of the rain
Thinking but not acting
That they're not to blame"
So she's angry at those who failed to help her, and those who aren't helping her now, but still she's not alone, there are others like her, and she'll overcome what she's been through, and get her revenge.
Sounds to me like a girl who was raped:
"Memory still haunts me In the dead of night
Over and over I felt so small"
and that no one helped her as she cried for help, and how afterwards, everyone blamed her or tried to ignore what had happened:
"Where are the heroes I my time of need Is my crying abandoned? Or have they gone Oh no
They just tend to stand Out of the rain Thinking but not acting That they're not to blame"
So she's angry at those who failed to help her, and those who aren't helping her now, but still she's not alone, there are others like her, and she'll overcome what she's been through, and get her revenge.