This doesn't contradict what I said, rather confirms it. Once you've already started caring for someone, you assume a duty of care. If you just casually stroll on past, you're fine (legally).R v Taktak (for NSW at least)
brief facts: Woman ODs on heroin, male friend tried to wake up the woman (splashing face, resuscitation etc), can't wake up the girl so he dumps her at the door of a GP and she passes away.
The key factor in Yeldham J's judgment didn't turn on what the male did but rather the fact that his actions prevented the woman from being able to get real help ‘there was evidence that the appellant did assume a duty to care for the deceased girl, who at the time was helpless, and by so doing removed her from a situation in which others might have rendered or obtained aid for her.
This is with respect to the criminal liability aspect of things, civil law bores me.