I rescued two cats... I need help with introducing them, one is violent !?

Question by yeah , yeah whatever: I rescued two cats… I need help with introducing them, one is violent !?
In 2007 took in a cat that was living in my condo’s parking lot for many years.Her former family got evicted and the pound took the dog but this cat was left out to fend for it’s self. One person took her in but sadly that lady passed away within months ( she was 90) That ladies family put the cat out again. Another person took her in but within months put her out again. Winter of 2007 she was staying warm by going from car hood to car hood as people parked for the night. She scratched a few cars and there was talk of taking her to the pound so I took her in. She has been abused and can from being very sweet to violent. I have made a commitment to her and I she with me for the rest of her life.
Anyhow , Xmas night someone dumped a tiny kitten on my porch … she had a red collar and Xmas bow attached. I think she was an unwanted Xmas present. Anyhow , I took her in and tried to find if she had an owner. Surprise , no one has claimed her and I have been unable to find an home for her.
I have her in my bedroom but I would like to introduce the two cats. I have brought items back and forth so each could learn the others smell. I have also placed the now teenage kitten in a carrier and then brought her into the living room with the other cat. The older cat becomes violent and hisses, growls and then sometimes strikes out at me. She stays very angry. I have also held the kitten and walked around the living room. The violent cat still growls and hisses.
The violent cat really hates other cats. She is extremely large 20 plus pounds ( yes , she was that big when I took her in and I am trying to reduce her slowly)
Can anyone offer any advice? I fear really introducing them as I would hate for the teenage kitten to get hurt or killed. However it is unfair to confine the kitten to my bedroom … or is it?
Not sure if I made sense… I took her in in winter 2007 BUT SHE HAD BEEN LIVING OUT FOR MORE THAN 5 years! During that time she was abused ( kicked, chased, beaten) she was extremely people friendly and would approach people ANYBODY. She is still friendly but will suddenly and very violently scratch and bite you after you pet her. Then she turns nice again only to attack again within a few minutes. I love her and I am very careful with her and I don’t stress her out. I mostly just let her be….I NEVER let her out of my condo. I also put her away if I have company.
Laurie : Pepper ( that’s the older , violent one ) has been to the vet. She was given a full round of blood,urine, and full body Xrays….She is physically healthy. They had to tranquilize her to shave her belly to see if she was spayed ( she is)
Sandra: Thank you for your answer… I feel slightly better hearing your story… I guess I just need more patience and realize that it will happen eventually ! I have too see about the cage idea… Pepper would be hard to wrangle into a cage.

Best answer:

Answer by Sandra S
It’s amazing that the older cat is people friendly after all the abuse and being wild for 5 years!

It is vitally important that the introductions be taken slowly. I recently adopted a large male cat from a shelter and it has taken 6 months for my two existing female cats and him to get along. He is twice their size and kept on chasing and bullying them. They are adults so just imagine how much worse it would be for a kitten.

My new male cat also attacks my ankles one minute then is the most loving creature the next. Cats can lash out if you pet them too long. That’s the only way they can tell you “enough”.

You might want to try putting the older cat in a cage in the same space as the kitten so they get used to seeing each other but she can’t attack the smaller one.

You could also prop the bedroom door open just a crack so they can see each other but can’t fight.

Hope this helps. I had no idea it would take so long for mine to adjust (I was almost despairing) but I’m finally beginning to see light at the end of the tunnel.

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Cats, help, introducing, need, rescued, Them, violent