Factual error: Narcan is an antidote to opiate overdose, but it is NOT an antidote to death, so the well-after-the-fact administration of Narcan would not enable Quinn to "rise from the dead." Under the right conditions, death can be prevented; life cannot be restored after being dead for too long. I'm no expert on Narcan, but it is my understanding that it can help restore breathing, not make a very dead person breath again. It must be administered in time, takes 2-3 minutes to work, and CPR should be given until the Narcan takes effect. Quinn was dead for too long to be revived like she was in the movie. (01:18:20)
Factual error: Towards the end, Quinn injects herself with a syringe full of Morphine to try and kill herself. She's dead in seconds. This does not act nearly that fast. Especially from injecting it in her arm.