<human>: Can you provide a brief overview of the text?

Throwaway account just because. We've been together for 4 years but for the next year or so we will be doing a LDR. This isn't really a problem for me, the problem that I've noticed with her over the course of our relationship is that she can sometimes have horrible judgement.

Most recently, she decided that it was acceptable to, alone,  get in the car of an older guy she had just met a few days ago because they had some mutual interest. I just can't comprehend how she could have thought this was a good idea without taking any precautions for her safety like bringing another person along. She doesn't do this kind of thing every day, but when she does show bad judgement, she goes big.

I'm considering marrying this girl but behavior like this makes me question her fitness as a possible parent in the future. If she displays bad judgement with regard to her own personal safety, how would I be able to trust her with the safety of my future child? Should this kind of behavior be a dealbreaker? If it's fixable, how can I bring it up or display my great concern without coming off as a condescending dick?
<bot>: Girlfriend displays horrible judgement sometimes, should this be enough to call it quits or how can I get her to stop without being an asshole?