Russian Blue,

Everything you're doing is right. I guess a few people are going through new introductions on here, including myself.

Rather than build a screen, what I do is stack baby gates on top of one another in the doorway. Fortunately, with this new introduction between Coco (my new Sphyx) and my crew, it's been smooth sailing so I don't need the gates.

Since Daisy is a baby, I don't think you'll have any major issues. Kittens are very easily incoroporated into a kitty household, at least from my experience.

Good luck!! Can't wait to see pictures.