Obstruction at the plate?

[MDblue]

The runner slid into the would-be tag. What I don't like about the obstruction rule is that the offense got the advantage by knocking the ball loose. And now she is being blocked from the plate while the catcher is attempting to control the ball. Needless to say, I called the runner out and caught all kinds of hell from both offensive coaches and fans. And of course they lost in the bottom half.