Hi L lily2021 ...welcome to the Cat Site....We are becoming SO discouraged and stressed over this and feel we cannot trust our resident cat’s aggressive behavior at the end of the day. Any advise would be so appreciated. Thank you!!!
Don't be discouraged. Cat introductions sometimes take many weeks or months, but usually when kittens are involved, the process is much faster.
We can offer you a lot of advice.
Yet I would suggest that you make a 'new thread' here:
Just copy and paste from your post above, ...and give it another "title" which is different yet to the point, and catchy, too.
This way we keep Audrey and Elliot's thread separate from your cats' thread....or else I would get all confused on whose cat I'm talking about.
Does that make sense.