Aw it sounds like they're gonna end up good mates oceansoul. Good on you for adopting from a shelter
I've recently integrated an inherited 5yo female with my 18yo female. Six months later and I'm over the moon if they pass each other in the hallway without hissing. Like others have said, time is the key, and it takes as long as it takes cos, well, cats are cats. My two are still separated when there's nobody home to keep an eye on them. They seem happy enough, I think each believes that she's the Most Important Cat In TheHouse World.
I've recently integrated an inherited 5yo female with my 18yo female. Six months later and I'm over the moon if they pass each other in the hallway without hissing. Like others have said, time is the key, and it takes as long as it takes cos, well, cats are cats. My two are still separated when there's nobody home to keep an eye on them. They seem happy enough, I think each believes that she's the Most Important Cat In The