Is It a Dead Ball?

[fastpitchfan]

I was calling a game on Friday night and had the following situation: Batter leaned back and swung at an inside pitch (a ball). As she swung, the ball hit her hand, which was out of the strike zone. She then continued her swing. When I saw the ball hit her hand, I immediately called dead ball and sent her to first. My umpiring partner called me over and asked about her swinging and whether or not it should have been called a strike. I replied that I saw the ball hit her hand and when I called dead ball, it killed the remainder of the play, making it a moot point that she swung.

Was it the right call?