Sorry to hear about Lucy...
I just wanted to mention that Turkey is high in purines, so chicken may be a better source for protein, but watch as many dogs can be allergic to chicken.
Also, low fat cottage cheese is an easily digested protein for LS/MVD dogs.
And Nature's Recipe makes an easily digestable vegetarian diet, canned too (mine scarfed that up).
I'm always looking for toppers for their food. Noodles/pasta is good too.
And occasionally whipped cream... also lots of fun!
Try adding some water to their food for softer poops...