Smooth makes a good point.

It happened to me once or twice early on in my career that I said something below and/or above 10k and thought "If we don't make it in, how is this going to reflect my character to my family, my friends, the family and friends of the pax, and the rest of the world?"

Thats something I wouldn't want to put my family through. If the FO's family is watching what is going on, they are repeatedly hearing about her saying that she should have called in sick, they are hearing about how they broke a regulation and were speaking below 10k.

That was what made me take the approach of "stay silent and the other one will get the hint."