Was thinking the same. OP better call whatever animal protection services you have there, it's not normal having that many cats, especially dead ones. She is probably a "crazy cat lady" that can't take care of them all, she needs help. Sad that we that work with animals see this way too often though.

I noticed your username... It's interesting

When they're cute and fuzzy it's animal cruelty. When they taste good it's called agriculture.

Unfortunately, if she's a hoarder it's definitely possible for that many to die at once. Hoarders can get *really* bad - I've even heard about one situation where there were 300 cats in a home(!). The hoarder accumulates them to the point where even basic veterinary care isn't practical anymore and then they breed, they have health problems that don't get treated or even noticed, there's not enough food for them, they're living in their own filth which makes them even more likely to get sick and this whole time the person probably continues to bring more and more in until some kind of drastic outside intervention happens. It's disgusting and cruel, and the worst part is that the hoarders still think they're helping these animals by giving them a home.