Sorry, just got to work and saw this.

As MaryC says, it is probably seasonal, however, if she really is shedding more than normal, check her food.

Sometimes, if you change the food, or the formula for the usual food has been changed, this can happen too.

I find that my dogs and cats shed in winter, as they are always in the AC in summer, so they get their winter coat then. Summer coat comes in winter.

Hair is the bain of my life too, I just don't bother any more and just use lint rollers on my clothes when I have to go somewhere important, otherwise I don't bother... I have animals and I am proud of it;-p