Ginny

You watch the redheaded student try to run before Super Girl flies herself straight at her and grab her, dragging her back to your office, where the portal is still wide open, and the green martian is standing there. She is absolutely shocked too see all this, plus the girl flying with glowing red eyes, with strength strong enough to drag her without a sweat. You realize you can't let her escape here, she'll tell everyone. You close the portal and order Super Girl to fly her down to the dungeon and to come back, and fast so no one sees. Within 2 minutes she's already back. You order both girls to change into the said uniforms, as they both look young enough to be students. You watch as they get undressed and put on the schoolgirl looking outfits. You order Kara to go fetch Zatanna for your plan, and as she goes to get her, you tell the Martian to change her form into Ginny. She does so flawlessly, perfecting her curves and face. You wait as Zatanna comes into your room missing her top, probably due to the extensive sex ed program, asking what you need. You ask her to use a spell to extract a certain memory, to use against Ron. You decide that with this you can use both of the super heroines as spies, and use your memory of the other night against Ron, plus a live performance soon to come. You wait as the procedure takes well over 2 hours, and all it ends with is a moving white and black liquid in a bottle. You smile as you walk towards the basement.