Looking for suggestions on how to help integrate a new 8-10 month old stray cat into a family of an 8 year old neutered male and 4 year old spayed female. Our stray picked us by laying on our deck for several weeks and being one of the most loving and sweet animals I have known. We have gotten her spayed, had all her shots, tests, treatments and anything else you can think of. We have had her a little over a month and my other 2 cats are still having trouble adjusting. I have multiple food and water bowls through the house, multiple litter boxes, a cat tree, feliway, and plenty of room for them to move around. They can lay in relative proximity but carry on terribly if they get too close to each other. She even scratched my older male cat's face. Any other suggestions??