very understandable. there's a lot of people that just aren't good with animals. You should be able to avoid problems. Cats can sense that they aren't liked, but just keep em seperate, its as simple as that
Wouldn't it be nice if all it took to introduce a new cat to your resident pet were a brief handshake and a couple of "HELLO, My Name Is...." nametags? Unfortunately, it's not quite that simple, which means you'll need to have some realistic expectations from the outset. What are realistic...