Steve,
There is something that you can do that might assit the many problems that Layla has. Your can order a wide-spectrum probiotic for dog with many different strain in it. Most people are unaware that the gut is the “master brain” for the entire body impacting every organ, emotion, and thought process. It is amazing really. A simple probiotic gets the gut under control and then all the problems (or most of them) resolve.
My dog was recently on a probiotic becaue she was on antibiotics. They sprinkle on the food, they are taste neutral so dog do not fight them, and are once a day. I would keep Layla on them for a month or two just to get her symptoms under management. You will have a “new” dog that compliments your training routine and Layla’s health issuex will minimize, and some go entirely away.
My prayers will be with you and Layla.
Celeste