Honestly, this feels like the chapter was structured to end here—big emotional climax and a several page epilogue—but I'm interested to seeing where we go from here.
If I didn't know any better, it seems like Utena is training Tres Magia to become powerful enough to defeat Venalita when he tries to make his eventual coup or something.
I don't really think that Sukoya recognizes Doujima Taiga's voice as Teruko's. People are really good at Clark Kenting their identities really well, even with accidents like not turning on the voice changer happening.