What happens to the minnow?
Really n.pike you over think these thinks too much. The minnow can only be in one of two places... either it's still hooked and on/in the fish, or it got shook lose during the fight. I don't think there are real many cases where the minnow was consumed by a fish and then you hook it in the mouth. It's more likely that after a fish is hooked the minnow gets spit, but my vote goes to shook lose during the fight.