I'm at my wit's end! Peeing and pooping EVERYWHERE!

[moosmom]

Feliway concentrated spray.

[Jessika]

Feliway concentrated spray.

This was going to be my suggestion.

I have a VERY timid cat who is very sensitive to changes. When we moved, I was VERY worried that he would be so stressed out and wouldn't eat, leading to fatty liver (My sister's cat had to be euthanized when she moved because she was so stressed she stopped eating and developed fatty liver). We decided to keep him confined to ONE room in the house, not allowing him access to the entire house, for a week or so after we made the move. I also bought a feliway diffuser that I used in the room he was in. He had all of his familiar items: his blanket, scratching post, food, water, litter box, some of our clothing, and a night light just in case. I also bought some stinky wet food for him to MAKE SURE he was eating SOMEthing during that time.

After a week or so, I allowed him out and let him explore one room at a time a day so as not to overwhelm him with the entire house at once.

He did fine with the transition, but I chalk it up largely to the feliway helping ease it. He still views that first room as his "safe spot" and will go down there to hang out when we have people over or we bring a strange box into the house and freak him out...

So perhaps you should confine her to a smaller room or area and consider a feliway plugin. Giving them access to an entire house during a move can be stressful and overwhelming, and cats very commonly react to stress and anxiety by inappropriately urinating and defecating.

Also, consider changing back to the original litter you were using with her. Too many changes at once can be absolutely overwhelming. New house, new people, new pets, new litter... can just be too much for her.