Clip would sure help. A right-handed pitcher I work with really leans to her right though not bent at the waist. I have finally figured out that it's how violently to her left she's swimming with her glove arm.
Welcome to the site! You will find excellent sources of help over here for pitching. Some of the greatest pitching coaches in the country have frequented DFP. As Doug mentioned, if you could capture a quick clip or two of your daughter pitching, it would really help calibrate us all as to what issue you are facing. There are plenty of living room clips over here, so if the weather's inclimate, just make a quick indoor clip. Toss it on youtube and post the link!