I think the dachshund is overjoyed to see a cat-that's the problem. She has her confused with her old cat buddies. A dog's happiness may look like aggression to a cat/kitten that isn't used to canines.
DN is going to post a lost/found notice on the cat tomorrow-if the cat is just lost her people may see the post and come get her, in which case I was in a tizzy for nothing. (And DN does want his own place.) But sadly the economic downturn has caused a MAJOR increase in the abandonment of pets : We had an article on that on the paper's front page just a few weeks back. And that is a nationwide problem; we've seen the articles posted here. So I am going to act as if the worst best I don't know which case scenario will come to play, and take for granted the cat will be staying here for a few months at least (ASSuming no one claims her and DN doesn't find a current cat owner to adopt her-he is looking there, too.)
Again, all advice appreciated even if I don't reply to individual posts.