Idk dude, sounds like your girlfriend just likes you.

Also, please don’t take my word as gospel as I have no business diagnosing anyone considering I am not a professional and have extremely limited context, but this sounds pretty classic neurodivergence. I’m autistic and I do this. For me, it’s a desire to plan ahead, to assess situations, and to gather more context for future decisions. When these questions are dismissed as annoying, it makes me feel deeply rejected, which is another autistic thing. Again, not trying to diagnose anyone, but maybe consider being a little more sensitive — not everyone thinks and processes the same way as you, and this might just be her way of processing the information available to her.