Meg, Sending many, many purrayers for Tigger and you. One of my kitties adopted out to the sweetest people that have adopted 3 from me (I cat sit for them as well as clean) are going through the same thing with my rescued Binky. They have added to his meds, and I'm saying prayers for Binky & Tigger now. As others have said, don't beat yourself up for not noticing! Many times cats hide their symptoms. It's built into their wiring. Please give her lots of kisses for me, and all the PTers who'll be praying things perk up soon. Do get her to eat though! And keep us posted.