Dose - odd reaction from 200mg of cocaine

[LXX]

Hi,
I just would like to write about a distressing experience that happened the other night and to get some input from anyone knowledgable enough to know what might've happened.

My friend was out with me in a bar and someone gave her some coke. She did approx a fifth of a gram in one go. It was her first time using coke and she is in good health apart from that although on that day she hadn't had much sleep the previous night and had also been drinking fairly heavily and taken 3/4 of an E.

The dosage was on the advice of someone else and my friend had no idea of the purity of the coke. I think it was very stupid but the advice she got was off one of her good friends who was a regular coke user so she trusted it.

Anyway, my friend had a nightmarish ordeal, started to feel terrible, barely made it out of the bar and home, felt the worst she ever felt in her life, got very very hot in the face, fairly unresponsive and just felt like complete shite. She also felt like she was dying although she didn't admit this til the next day.

Could 200mg cause an overdose?

Thank you for any advice.