Introducing a new cat

Introducing cats can be a long process with many steps involved. Usually you start off keeping them seperate and as suggested, swapping their bedding so they can smell the other cat. You can bring them closer by feeding them near each other but on the opposite side of a door or gate so they won't be in competition for food or feel as threatened. Some cats never get along and the best you can hope for is for them to tolerate each other and give each other their space. In your situation it is made more difficult by the fact that you're trying to introduce a visiting cat. I think there's a possibility that everytime your daughter's cat comes for a visit you may have to start all over. Perhaps you should give your daughter's cat her own room in your house and reduce the stress on all the cats involved.

Cats are funny animals. Sometimes they just don't like each other. But usually it's just a matter of getting used to the new cat. Cats don't like change and having a visitor upsets the status quo. If your daughters cat is only visiting for a few days they probably won't have time to acclimate to one another.

Cat's have there own ways. ther eis not much realy you can do. you can how ever make them more used to there smell's. have your daughter bring a blanket her cat laid on over and yougive her one your cat's have layed on. now with this both of you need to be careful, if you leave the swithed blanket out your cat's meight start to mark the blanket and pee on it. even the female will do it. and have her bring her cat over more often, after a while they will be ok in the same area. but try the blanket thing that has helped me in the past alot. that way they can get to know the smell of the others. and always remember it will take some time.. cat's have a mind of there own