The thing is fitting psychological conditions into neat little boxes is just a convenient diagnosis mechanism; human brains don't have on/off switches for diffe

The thing is fitting psychological conditions into neat little boxes is just a convenient diagnosis mechanism; human brains don't have on/off switches for different conditions, and actual presentations vary. So it's entirely reasonable that her behavioral changes (which could be as minor as looking up certain things on the internet) were not noticeable to others.