If that’s how you feel. Still happened and explains how she managed to fly the Falcon.
EDIT:
She found the ship and I think the flight simulator was in there as well. So with that being said there’s nothing wrong with any of this.
The key thing that people miss is that Unkar Plutt raised her on Jakku. She hasn’t been on her own the whole time. I imagine growing up she was a sort of servant to Plutt, working for him (on ships and such, which is why she knows so much about the Falcon - his ship) until she was probably 18 or so and then had to fend for herself. Would be smart for him to teach her to know the ways around a ship so that if he needed repairs he could just get her for dirt cheap.