hello i need some advice for my friends cat. im going to tell you the cats life story so that you all know what its going through so we can try and get to the center of the problem. the cat with the problem is named Sierra. she had been raised with another cat known as blazer and she loved him but he died a couple years ago and since then my friend tried getting her another cat friend known as tiga. Sierra never took to tiga but has gotten to the point were they put up with each other. but my friend has been going through many pets as of late. mostly dogs... lets just say i have been trying to teach my friend the proper care of animals and its been very stressfull because she was raised by people who think that if you get sick or bored of a animal you get rid of it and get a new one. so as i have been trying to help my friend understand things better she has been threw many pets in the last 2 years. she has been through 3 dogs, 1 of which had 3 puppies. now she has 3 chihuahua's and rabbits and rodents ontop of her 2 cats. but what has really messed with the poor kitty is that my friend was trying to sell her house and move and while her house was on display she had many different people watching her cats and she would just drop the cats off at their house and leave them there only to pick them up to take them home to bath and brush them. she has decided not to sell her house so the cats are back, but now she is making renovations on the house, on top of that my friend is pregnant and is having her sister live with her for the time being... so as you can see this poor kitty is under a lot of anxiety and stress. she is hissing and growling at every one, she is hiding when ever she can and has peed on the sisters bed. my friend got her some organic spray and collar remedy that is suppose to help with stress. i have told her to place her in a quite room with her food water and litter box and to make her a nice hiding place for now. what else do you think she could do to help this poor little kitty. thank you.