Adele Geras 
Blossom”s Revenge 

Blossom, a plump and contented cat, is horrified when six-year-old Prissy comes to stay with ”her” family. Suddenly there is nowhere she can go and doze without being disturbed, no place she can hide from Prissy. And when Prissy pulls her tail (no-one has done that since she was a little kitten!), Blossom makes up her mind: Prissy must go!
All she needs is a plan…