swing needs help.

Slow down the machine so that she can concentrate on mechanics. It will take time. Think of it as a more accurate soft toss that does not blow up daddy's arm. Keep taking vids and showing her. She needs to see what she's doing as well as feel what she should be doing. Have her diagnose herself and add in your thoughts when needed. You may be surprised how quickly she self corrects.

Then when she has a good handle on everything you turn up the machine a little and begin again.

Sorry the gifs are so big but it's free.

Hand set is good and the hitter does turn the barrel. All are good. Now the not so good...
I don't like her rear foot needs to be pointed forward towards home plate. I don't even like the placement of the mats. Move the mat closer towards the pitcher/machine. No coil, no corner & level swinger. Right now her swing is/seems to be drop hands and bat to be level with the ball swing. Just drops foot front heel and swings.
Now what to do? Keeping it simple.Sure you know needs to learn what a corner is and how to coil. From that hand set position show the hitter how to load her hands behind a corner (poke someone standing behind her with her elbow). As the hitter is loading her hands show her how to move her body forward as she is coiling the hips (forward by coil). Plenty of gifs/video showing FBC.
Hopefully this is a good starting point for you and the hitter.
Like I said the hitter does turn the barrel it's just where the barrel gets turned maybe the problem. JMHO.