HI Sunny!
Keep doing what you are doing! Introduce them to each other slowly, let your pom get near her so he can smell scent. Don't force them to stay together. You can let them run around in a room together when you are home to see how it plays out. I have owned several poms, and have owned several cats they gottone along just fine. Make sure you keep giving your pom the same amount of attention you give your cat so no jealousy comes about. Who knows, they may make great play mates while you are at work. Mine do! I have 3 dashunds, 1 pom-dot (half dashund/half pomerian); 1 pomerian (15 yrs old) and 3 cats. Enjoy, they are fun to watch playing with each other.