Like the ump who told the catcher, if you were framing those better I would call them strikes. They are hitting the corner but you aren't making them look good enough.
My dd was the pitcher that game.
We had this exact situation this past weekend. Umpire told me that our pitcher was hitting the corners, and he would call them, but the catcher was pulling the ball back over the middle of the plate each time. To his defense, it was a pool game, and that particular catcher does not do the best job of receiving balls and strikes. She was clearly jerking strikes back into the middle of the plate every pitch.