What does it matter what drugs the woman hit by the car was on? It changes nothing about the case.

Looking at the video it's clear that at least some evasive action could have been taken by an attentive driver; at the least it should have been possible to hit the pedestrian at a lower speed. This article claims the car had six seconds to react (although I'm not sure what sense that's based on) and that the crash was avoidable if the operator had been paying attention, according to police.