Odd play last night

[MD Longhorn]

Fed rules, Varsity game.

Batter swings big, but hits the ball about a foot, presumably fair. I say presumably because just after the batter started running, the ball shot up the first base line. It was clear that the ball hit SOMEthing mid air to change it's speed and direction.

PU called her out, and no arguments.

In the post-game, he admits he did not actually SEE the ball hit anything, at which point I tell him all I saw was the bat on it's way down after being dropped. I also did not actually SEE the ball hit anything. I think we both were in agreement that it had to have hit SOMETHING, and that the change in direction and speed came while the ball was about waist height.

I guess the question is --- if you didn't SEE it hit body or bat - but you otherwise KNOW it hit something, do YOU make the call?