Hey...I found your post...okay, make a birthing box for her. Put old t-shirts or towels in it. Show it to her, let her know where it is. She may or may not use it...cats are weird that way. Devon will protect her babies...you may need to keep her and the babies seperate from the other cat for a few days or so. Azriel may actually be a help to Devon or she may upset her. Just be on the lookout for odd behavior. Cats know how to have babies, so if you aren't there for the birth...don't fret it. But, it may be good that you are there in case she has complications, but they are rare. If its her first litter, it will probably be small, maybe only 2 kittens. Watch her and make sure she nurses them, sometimes first time moms don't do well with their first litter, but hopefully she'll be a good mommy. More than likely she will. Good luck with the kittens..let us know how it turns out.
Because I was born in the South, I'm a Southerner. If I had been born in the North, the West or the Central Plains, I would be just a human being.