Of course she ain't dumb silly , she's just a girl.
All the differences you've stated , i have noticed between myself and almost all of my female friends. Most guys i know will handle navigation, new problems , etc rather well where most gals will not. I don't know why that is , but it seems girls really aren't built the same , mentally speaking. They have different sets of skills , likes and interests.This can get quite irritating , my ex was quite lousy at getting places on time , or finding her way when she got lost , but some of the things she was good at would put anyone to shame. My current girlfriend however seems quite a lot less afraid to explore and she does way better at getting around a foreign town because of that. Now the point is , my current gf. doesn't play any games at all , the ex however did.
Now I'm not dismissing the merits to video games , but when accounting for such skills it's a good idea to consider different sexes separately.