Hi Sarah
I was 100% cat until we got our puppy about 9 weeks ago. I have 3 cats and was particularly worried about one of them (Harry) as he lived on the fridge for a while when we got our 3rd cat an was really stressed.
I am no expert but what I would do is make sure that Hippus smells your hands everytime you have been to see/visit your new dog, so that the dog's scent is familiar to her.
Also, make sure she has a safe space/room in the house initially so she can get away from the new addition if she wants to. Over time I would not keep them separated for too long, as you will find that they don't get used to each other as quickly and it stresses them out for longer (in my personal opinion).
To be honest I expected them to have about a week to get to know each other and it took much longer, so don't expect it to happen overnight. It may be different for you as all animals are different. I did use Feliway for 2 months which I think helped - but it is expensive and not all cats respond to it apparently.
I was worried about the time it was taking for them to get on with each other and put a thread up here in the behaviour section titled 'Help Please Cats not liking new Puppy' and the advice I got there was invaluable, so have a read and you might find something there that can help.
Good luck and let us know how things go!!
Maryann
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