It is okay Marci.
Ellie had pancreatitis.
I make her food.
She is still alive.

Sooo, what would the vet think of that?
There is NO REASON that you cannot continue to make her food unless she is allergic to everything and the protein has to be hydrolyzed. When dogs have more than one health problem and they all need a special diet, homecooked is the way to go, so it fits the dog's needs.
Talk to a nutritionist.
They will be able to help you.
And skip the Royal Canin because besides it not being good, it will probably make her very itchy.
I do have to say again though, I think beef may have set Ellie off, so I think I would find something else. You can ask if egg is okay and maybe go to fish and, as a last resort, soy.
I still have a hard time believing that it is pancreatitis.
Pay special attention to her sugar (your vet will know this) because she is at increased risk for diabetes now.