Tewk's "stepping open drill"
i believe shoulder down and in would help .
stepping open while forming a "stack" or RVP connection point.
Just for the sake of discussion, Tewks is teaching much more of a wrap, and "flattening,
As compared to this clip of Hamilton, who has a much shorter Barrel path to the ball, and not so stacked.
My DD has amore tip and rip, bat path, she is tall, and i thought that might help her , and it did, with low pitches.
When i drill, i will add the stack, keep an eye out now, for this rvp position.
although there does seem to be some hitters, who only get close to this check point.
as an edit. It does not appear the V, stays at any point in a TIGHT V, it is widening though the swing, after its optimum tightness.
The height of the hands seems to determine whether the "stack" is vertical or the vee is tilted.
There is a lot of "play" in the RVP position in the HLS, IMHO.