dating girl w/ kid issues

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so ive started seeing 23yr old who has a 3yr old son. This is not an issue for me at all, as I like kids and I'm good with them.

However, yesterday was the "first meeting" between myself and her son and it quickly became abundantly clear that she has a major problem when it comes to parenting. Her son does not listen to her at all, not for anything and she does nothing to rectify this.

a typical interaction went like this.

her "don't do that"
him "no"
her "please dont do that"
him "no I can"
her "dont do that"
Him - continues to do it
interaction ends

this happened again and again and again and it took everything I had to not say something.

on my way home I really thought about ending things now but.

I like her, im not too attached now but could be in the near future. She is very good for and if there wasn't this one issue I could something meaningful and longterm with her.

also I am really good with kids, I don't give in but I also never lose my temper and I think if I were to apply myself I could do some real good here but it's not really my place to do so and could end up blowing up in my face.

The father lives in area, is in picture once a week or every other week.

Thoughts?