Tell her not to be in a big hurry on the way down. Use a lower gear and don't ride the brakes. Hot brakes have failed before and there is a check point for brake temperature on the way down. If the brakes are too hot she would have to sit while they cool off, thus losing a lot of time.
In response to:
That is doable unless you are capable of sub 3 hour ascent and or sub 2 hour descent. It is hard to make it from the summit to Devil's Playground, brake check, traffic back to Manitou, and finally a parking spot in less than 2 hours. Good luck!