She nodded and floated away and free. "Well, this should be it then, I hope your wish brings you joy!" she said happily. Then the wings behind her flared and she sang again. A light filled the mandala just before her face, surrounding him and Baymax. She lifted her hands and sang in a higher key. The light would get so bright that Baymax and the glowing symbols would be all that he could see for a moment, then faintly in the light, as if she was part of it he'd see what would almost look like a girl to him and oddly, like data to Baymax. "Yes, good!" a delighted childish voice cheered. "More information! MORE!" and then the light would flare so brightly that it would blind him and overload Baymax's optics for several moments. And when it settled they were in Sanfran sokyo, but one where things were just a little different. Where Hiro had rushed into the fire, and Tadashi had broken his leg trying to go after him, and thus Tadashi had been still outside, and Hiro was the one who died. Sure, there would now be two of Baymax, but... details, right?
Thank you for the awesome PSL! It was fun!