Other than the chick, the mice/rat were white.
Braining, yet to do because I thought it was for baby snakes, but if that would help I can splice open a cranium (would need to be told the proper way to do so though).
Chicken broth, I would believe that but I tried feeding a chick to her. Since I have yet to try that I will do it next week if she DOES NOT ACCEPT this smaller pray item today.
Thank you for the suggestions.