Actually 700mph isn't as fast as some people might think.  It is fast, but your average plane travels around 600mph and how long are your flights between states?  And that's flying directly rather than using roads, avoiding buildings and trees...  As for reaction time, a normal human takes .2 seconds to react to something and tell one's muscles to do something about it.  In .2 seconds, at 700mph you'd travel...  Anyway, I think I'll drop it for the combative rolls if it's going to be this much of a fuss.  Her combat reasoning will be because she's super fast, maybe slower than I was originally planning but still fast enough to get XXX for combat.  I'll just up her armor and weaponry, she'll be hard to fight still...I just won't get the Init, bonus.