Well,your cat is stressed,because of the new environment and I take it,other animals...I am not sure what you can do about it,but I would put her in a non-stress situation,in a room by herself with the litter-box for a while.
Do not punish her for being stressed out,cats are very easily stressed.
One of my cats peed and pooped in my bed,when we had company staying in the house,but as soon as they left they were back to normal.
Cats are creatures of habit,there will always be problems when their life is changed,one way or the other.
You might even consider giving her some meds from the vet,to calm her down.
Aww Lucky,you are soo much quicker than me
