Madoka nods at Alfredo's question, gaze nervously darting between the three boys here with her. It seems Romeo is going to be busy for a bit with making them invisible, so she knows she'll have to pick up some slack on defending them here. Even if all she can do is throw snow at the enemies-- especially since she's not going to flip that switch the other way after what Tidus says, thanks! Maybe if they get into a real tight spot and there's no way to defend all of them otherwise, but Madoka is really worried about where she may end up if her feet leave the ground that much. Especially with all these winds knocking them around.

So instead she ducks down, grabbing snow and balling it up in her hands. It's not the perfect snowball, since she's rushing, but the snow sticks together enough for her to throw it at one of the approaching sprites, trying to keep them away while half of them are busy figuring out Romeo's spell-- or magic, or whatever exactly he's trying to use. She's already ducking back down to grab more right away, determined.