Dropped 3K in Series

I saw the play but it was kind of confusing from the camera angle but what appeared to happen was pitch was high and inside went to the backstop, I can’t remember if it was a full count but I know there were two strikes. The batter checked her swing waited a second and took off for first. Catcher recovered the ball and threw it to first. BU must have called an out. I think the PU checked with the BU to ask if the batter went on the pitch. I am guessing BU must have said yes. It was the third out but the runner on base came home on the throw so had it not been the third out a run would have scored. There was some discussion afterward with the Mich. Coach. They must have sold the call because nothing more was said.