Very tough to do some things when you get older (like peak at the right time) as your body doesn't recover the same from work-out to work-out and race to race. Sometimes you just crash, no warning.
I think Regina should think seriously about retiring. As much as I may like her as an older athlete, she hasn't been able to put it together for a whole season as an elite for a few years now. Maybe time to have some lower key fun.