^ I noticed that too, and I think it's because that's the first impression they got of Momo before she started showing her true self, in the first episodes she was stalking Shamiko to the point she even entered through the window once, and Shamiko was scared of her, of course they developed a lot since then but first impressions matter a lot and she looked to be the deadpan pervert/romantic assertive type of magical girl similar to Homu.