To me it appears she topped the ball on that pitch due to an upward swing possibly caused by 'bat drag'.
However, related to what docnsx01 said, it also appears to me she loads into her back leg, then just pushes her hands forward, while the leg drive and hip rotation weakly follow. She just needs to get the sequencing corrected. If you push the hands and shoulders early, the back elbow gets ahead of the back hip. That is called 'bat drag'. It can cause casting and an upward swing in some. It could be related to the results she is having.
Just be aware I have seen some really odd drills on youtube to fix this. I'd probably get the opinion of her hitting instructor if she has one.
However, related to what docnsx01 said, it also appears to me she loads into her back leg, then just pushes her hands forward, while the leg drive and hip rotation weakly follow. She just needs to get the sequencing corrected. If you push the hands and shoulders early, the back elbow gets ahead of the back hip. That is called 'bat drag'. It can cause casting and an upward swing in some. It could be related to the results she is having.
Just be aware I have seen some really odd drills on youtube to fix this. I'd probably get the opinion of her hitting instructor if she has one.