<div class="FTQUOTE"><begin quote>Turning your cards over on the table without calling a bet is tantamount to mucking your cards.</end quote></div>
I just don't understand where you ever got that idea. I can only guess you play in a cardroom with some whacky house rules.
Unfortunately, in this day and age, cardrooms across the country are staffed--even managed--by people who had never set foot in a poker room before the introduction of The Travel Channel. And these people are making the rules.
<div class="FTQUOTE"><begin quote>...when you show your cards you are saying something...</end quote></div>
In this case, all she is saying is, "Looks like the betting is over, and it's time to show the cards." She's not relinquishing the pot, her cards, nor her action.