I think she thinks this pse demeanor is what most guys want. And cleary many do! So she defaults to that mode. But she's smart and interactive, so if you communicate with her and let her know, she can absolutely downshift and do sweet girlfriend too. She's convincing in that role. That was the point of my yin/yang tangent in my review. Not that she and Momo are opposites, but are actually different manifestations of the same thing. Alternative food analogy: (Americanized) Mexican food! Sometimes the rice and beans are inside the tortilla, sometimes they're outside. So do you want a slut wrapped in a sweet girlfriend package, or a sweet girlfriend wrapped in a slut package? Once you start eating, it doesnt make much of a difference.
So open up to her! It's worth it. Really you want to explore all her sides. Physically and mentally.