You know my girl is a live only girl, some just will never touch the dead or pre-killed.
But what I have come to learn, if a eat fails, a big snake will see a large mouse and kill because it's an easy meal, my girl weighs in at 1230grms and eats 5-6 mice a weak( she got bit by a rat and is scared to eat one now :-( )
But since I made the switch to mice, never misses a meal and very ferociously kills to eat, never walks away, I know alot of people won't tell u to feed a large ball mice, but when it comes to feeding or watching it fast, I think anyone would rather just see their animal eat, even if it means an undesirable meal.