Player on the floor

[Terrapins Fan]

I had an oddity tonight.

3 man varsity girls.

In the 2nd Q home up 20 and pressing, on an inbound play, visitor make a bad pass and A1 ( visitor ) and B1 go after the ball, B1 slips and falls, A1 gets the ball and turns away from pressure from B2 and falls over B1 on the floor. she loses the ball and B3 gets the ball goes to the basket for an easy lay up.

Play is stopped for B1 who got kicked in the face as A1 fell over her.

I got nothing on the play, but visitor coach ( who is a very good official also ) is complaining that I should have had a foul on B1 on the floor.

it happened so fast and all I am thinking is, what's the call if any? A1 turned and fell over a player.. the player never moved, she had fallen going for the ball but didn't get the ball.

Should I have had a call? What's the call?

I had an evaluator there and I asked him at halftime, he said he had nothing. Partners had nothing as they were watching their areas during the press.

Thanks,