No, don't tell her. Just leave it alone. You shouldn't feel guilty. And who cares what she thinks? You don't have any control over what she thinks anyway, so don't fret about it. Embrace silence. You can't solve a problem with the same mind that created it. Think about stuff differently. Wisdom is avoiding all thoughts that weaken you.
"Always go straight forward, and if you meet the devil, cut him in two and go between the pieces." - William Sturgis, clipper ship captain, 1830's.