Been waiting for MioXShizuka to reappear. For me, they provide the drama and intensity angles of a relationship in this series. I'll never get over that chapter where Mio was so done with Shizuka's shit that Shizuka finally had the epiphany to not let Mio go and actually chased after Mio. Imagine that, a goddess of senpai like Shizuka realizing she wouldn't last a day without this stormily romantic plebeian kouhai. I so enjoyed that scared and panicked look on Shizuka's face when Mio told her she saw her and Kaoru kissing in the library. Like, TAKE THAT SHIZUKA.
I think Shizuka's genuine in wanting to prove to Mio that she's super for real i.e cutting her long, raven-black hair short cuz it's like the reminder of Kaoru's once obsession with her and her (Shizuka's) ties to the memories of their (KoaruXShizuka) romance. She wants to move on with Mio in her life.
Hence, her acquiescence to be abducted by Mio (hopefully, it's a metaphor. But this is Virgin's Empire so I'm kinda expecting a slightly freaky-sexy kidnapping or stuff).