My cats behavior has changed and this coincided with a flea in festation.
Lately it comes in through the cat door and belts along the floor to the
countertop and on to the kitchen window sill. We have to keep chasing it off
the counter and instead of hanging around it belts outside in a hurry. A
couple of nights ago it slept on the TV. Yesterday I noticed little white
things on a rug it usually sleeps on (eggs). I looked at them with a 10x
Magnifier and compared them with pictures from the net. I hadn't realised my
house was part of their lifecycle and that explained why one of us was being
bitten (but not me).
   I assume that the cat can see the flea eggs etc and knows the area is
contaminated and that the fleas will jump at her. That could explain her
agitated behaviour. I have put drops on the back of her neck and bought
spray for the carpets.
John