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					Originally Posted by Andy  Crowder, you idiot, you're wrong!     
I am going to take the other side, however.
 
ASA 6-B: ...The use of an unreported substitute is handled as a protest by the offended team  while the player is in the game. (emphasis mine)
 
Since she is coming to bat, there is a potential opportunity for an out if the defense is paying attention. (6-C-3). It's not your job to remind the coach to report her back in the game. 
 
I believe this to be a different situation than preventing a coach from making an illegal substitution. In that case, the penalty is more severe, a disqualification as opposed to an out, at the most, for an unreported sub. | 
	
 I'm with Andy.
And to Andy's point, lets say the defense 
was paying attention and was planning to utilize (6-C-3) to get an out should she reach base? 
In your sitch, DC said nothing when you went over to the OC to inquire about the re-entry; but I'm sure you can imagine the possible ****house that could occur if the DC chose to make it an issue.