zanzibar A1 swung her arm in an underhand motion and slapped the ball with the palm of her hand. The slap was loud, but there wasn't a lifting motion involved. I ruled a legal hit. Comments please!
Vb Scrub If all she did was hit the ball and it happened to be underhand then you made the correct no-call.
MCBear If the ball did not come to rest and it was not caught nor thrown, then the play as you described it was perfectly legal and you made the correct no-call.