Hi Sarah,
There are lots of things you can do to help your cat. First, here is a great link about it :http://www.vet.cornell.edu/fhc/health_information/brochure_destructive.cfm
Make sure to provide lots of other options for her, scratching posts are great, or the rigid cardboard scratcher boxes–you sprinkle some cat nip on them to lure them and encourage her to scratch.
Clip her nails as short as possible. If you are not comfortable doing this, take her to a groomer or your vet. It’s important to do this every 4 weeks so they don’t get too long. This will help a great deal.
Make sure she has a lot of things to keep her busy,,cat tree, interactive toys, etc..that should help too.
Finally, if you catch her in the act. You can try sound as a deterrent. Take a metal can–like a soup or coffee can, fill it with a few pennies and seal it. When you see her start to try to scratch, loudly shake the can and say NO in a firm voice. After a few times of doing this , you may see her not trying to go near the furniture.
Good Luck! Make sure to check out the link I put in at the top of this, lots of good advice there.
~kelly
I agree, it takes time for a little pup to build confidence! He is tiny and just spending time with him in the yard working with his basic commands and puppy treats will get him confident. Soon he will be dragging you everywhere! I started carrying small tidbits of treats in my pocket and after pottying I would treat him. Then walking around the house with the leash attached to me as he gets older taught him to watch me and when he had that connection I would begun to walk side by side him outside and keep eye contact when I switched direction and he had to switch with me. I would give him the command to sit occasionally and then treat him. Soon I said his name…then pointed to my nose then a treat when he had eye contact. It takes time and patience to teach them to connect with you and time will build his or her confidence.