Well, dude, sounds like you have a great daughter but you can solve her D problem in the process of solving the lack of exercise problem. Autistic, brilliant, or just average - you gotta get that kid to participate in a sport if you have to do it at the point of a sword. Can be individual or team - let her pick - but she’s GOT to pick something.
I’m not a dude, but that’s ok. :) You’re right that our daughter could use with some kind of sport participation. She’s not particularly interested. I think we’ll have more success in getting her to walk/jog every morning. Her favorite sport is beating up younger brothers. heh. Well, not really because they are all afraid of her. She has no mercy!