Everyone makes mistakes. The trick is to learn from them before they do much harm.  She didn't.  She was already going through programs that were telling her that behavior is dangerous.  She didn't listen.  That is no longer a "mistake".  That's a decision on her part whether to sacrifice that lifestyle for the safety of others, or to maintain it with disregard for what she could do to others.

Pretty simple.  Learn quick and behave with respect for others first.