Would Chao exist since she's alternate timeline. I don't even wanna think about timelines rn so I'll just go with she does. She could be someone else's daughter, Touta may not be the only grandchild of Negi.
edit: whippy, she came from early 22nd century didn't she? Since this is late 21st than she could very well be Touta's daughter.
Yeah the whole alternate timeline's thing is why I was wondering. Not that it matter's I guess, she wouldn't be in it until the very end even if she is Touta's daughter.