BOO - FED rules

[WestMichiganBlue]

Top of 6th, B5 bats in place of B4, hits single. B4 up next, fouls 1st pitch back. D-coach appeals that B5 BOO. It is too late to appeal B5; she is now a legal runner. But that means that B6 should be at bat. Do I send B4 back to dugout and bring up B6 with 0-1 count?

Suppose that B4 hit big fly to F7 with B5 going into 2B after catch. Now D-coach appeals BOO. I suggest that B4's out is removed, B5 is returned to 1B, B6 is called out, and B7 bats next. Agree?

Almost the same - If B4's hit was a single with B5 going to 3B and then D-coach appeals BOO. Remove B4 from 1B, return B5 back to 1B, call B6 out, and bring up B7. Yes? No?
WMB