Stop the video at 1:33 and you see the keep is going down for the ball and the striker goes fwd into the keeper. There was no way the striker was going to get the ball without making contct with the keeper and that in and of it self was dangerous. Had it been two field players (and keeper was staying upright kicking ball) then a charge would have been called for the way the striker went into her out of control. IMHO it was a charge and should have been called as such. In not makeing the call the ref has said it is ok to plow the keeper over. His desire to not effect the game resulted in his effecting the game by not making a call that no one (well there is always someone questioning every call) would have questioned, at the very least it would be easier to defend the call than the non call!!