Has she changed her perfume? Shampoo? Laundry detergent? Or has she done anything different, like have a new boyfriend or roommate? It seems like this cat is displaying EXTREME dipleasure at something she is doing.. so it may be traced back to her, not the cat. I don't know.. I'm not too good with cat behaviours like this but that's the first thing I thought of. I'm sure you will get other responses that have more info.

Good luck!