Very good read FFS. Thank you for posting the link.
Eric F, not sure what you mean by hands leading. I thought the swings is more hands than arm.
Good question. That is one way to view it ..... have an objective of the bat becoming pointed out to the field.
Notice in Brian's swing below that the bat becomes pointed out towards the field.
Perform a few dry swings where you first stop at full extension with the bat pointed out to the field, and then perform some dry swings where the objective is for the swing to pass through full extension. Let's see if she gets the notion of the release process.