I have read things, but maybe not as clearly as I could. I just want to echo again what others have said, but, maybe more strongly. Please be patient with the introductions of two adult cats. The longer the time you can acclimate them to the house- separately, the better off the chances of a smooth transition. Cats are funny. I could not imagine introducing two adult cats to one another in less than a month. Bad first impressions can be lasting impressions. Don't rush it. Kittens- easy peasy. Cats- not so much.

I would get some phernome (sic) plug ins and put them in each room the cats are confined to. I swear by this stuff.

And, lots of extra loves to Aurora, so that she knows she is not being displaced.

Good luck, orangies are so special.