Why didn't I think of this sooner?

As I said, I really like Iris.  She loves people, especially kids.  She's housebroke.  She follows me from room to room to be near me.  She goes for a walk with us and walks well on a leash.   She chases and retrieves the frisbee and loves all kinds of doggie toys.  
She does worry when I'm out of the house; I see her little face in the window watching me.  As I said before, my main concern is what she will tear up if we are gone for a few hours.   
I was lying awake in the wee hours of the morning when it came to me:  Mandy's old pen in the barn!

I'm pretty sure there's no way Iris could get out of this pen (eight-foot-tall sides, concrete floor), and there's nothing she could damage.  It's the pen I was using for the two chickens, so I'll have to clean it out and perhaps make a new hay-bale house, replacing the old straw bales that have been there for... six years, I think; but this could work.   If it does work, I can do away with the cage in the house; I was only using it to try and get Iris used to it so I could confine her when we leave.  She doesn't need to be put in a cage at night.  

Mandy loved it and spent every night of her life locked inside it.  I don't expect Iris to enjoy it, but this may be the solution that will allow me to keep a dog I really do love.  And she'll only be confined there when we're gone.   I'm fairly certain her chances of being adopted again are slim, so I want to give her this chance.  
Someone asked about Iris' kennel cough:  she still has coughing spells, but she's getting better, and her appetite is improving.  

Here's your iris of the day, a white one that just opened up overnight.  By the way, the picture I posted yesterday that I thought was supposed to be of my black iris?  I'm pretty sure I was wrong about that; I noticed one this morning in a different location that looks as though it may indeed be black.