I need guidance. Chloe is my 1st cat (1year3months) she loves the new kitten SAM(only had him for two weeks). Aggie who is about 3-5 years old has been in our house for two months and is afraid of Chloe. Aggie will growl and hiss and Chloe sometimes chases her from her litter box. She is now starting to avoid her box. Aggie is a sweet cat who was never wanted, It breaks my heart that she is scared in her own new home. Please Help!