at the risk of continuing this discussion, I can see the points of the mary sue argument. The only one that really bothers me is her knowing the falcon better than Han. That was ludicrous. But I can kinda let it go and assume she had just tinkered with it in its slightly modified form whereas han hadn’t had it since the guy on jakku messed with it.
I’ve been telling myself not to chime in here if I’m not going to say anything I haven’t said a million times already, but I guess this needs to be reiterated. Yes, she is familiar with its modified form in ways Han is not. This is made explicit in the film. She knows the history of who had the Falcon and what they did with it. The compressor that she bypassed was not something that was on the Falcon when it was in Han’s possession. So I don’t think we have to worry about Han not knowing about the Falcon enough (although let’s not forget the scene in ESB when 3PO tells him about the power coupling, which obviously he had been talking to the ship’s computer but Han’s reaction says it all - this guy’s knowledge of the Falcon is not infallible).
As to Wookiees being super rare, I had no idea that was the case. I can only go off what I’ve seen and in the PT it definitely didn’t seem that way. Maybe that’s an EU thing but I’m pretty sure they jettisoned the EU.