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What?
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Towards the end, I'm not really sure what happened.
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The girl slits her wrists in a suicide attempt, where the father then tries desperately to save her life, giving away his home, his money, everything he owns basically. He then tries to get them to take his blood in his last effort. The girl wakes to find her father had died while giving her his blood. Hence the crying.
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Oh. Okay.