How to integrate a second kitten

[FreyjaRoMaine]

Hi all, we've dried our house as best we can and look almost back to normal now - we're waiting for loss adjusters etc before the house gets rid of that lovely damp smell but we've now got dry carpets everywhere except one room. So I decided to collect Wicca and bring her home yesterday afternoon, and although my breeder warned me that Freyja would hiss and growl at Wicca - and at me - I wasn't prepared for Freyja to isolate herself the way she has. I've got Feliway plugged in downstairs in the kitchen, which is also where food bowls and litter trays live, but Freyja will not venture down there and Wicca will not venture up. I brought little Wicca up stairs into the middle floor last night, so Freyja locked herself away on the top floor. I ended up taking bowls of food and water into our bedroom, plus Freyja's litter tray, because it became apparent that she'll not venture downstairs to the kitchen.

Every time Freyja hears Wicca call out from the kitchen, she freezes and hisses. Every time I talk to Freyja, she hisses and growls at me. She's just jumped up on my desk whilst I'm typing this, gave me a head bump and let me fuss her, then jumped on her Tower and curled up to watch me - so I went to give her a head rump and got a hiss and a growl for my trouble.

No idea what to do for the best. Wicca now - technically - has free run of the entire house (even though she won't leave the dining room) and Freyja has limited herself to just one floor. Not what I intended at all.

Should I put Wicca's food/water bowls and litter tray in our bedroom so that Freyja can have the rest of the house to herself again? I didn't do that yesterday as Freyja loves sleeping in our room with us when we go to bed.

Any thoughts??