Scott,
Clearly the seat suppliers are rightly concerned about liability for seats installed with insufficient mount integrity to support integrated belts. If you are of small stature I would expect that you would have the seat raised and forward quite a bit and that should translate to a lower crossing of the shoulder belt somewhat.
However you probably also know that the shoulder belt top wall mount has a cover that can be flipped up to reveal the large Torx head bolt that mounts it -- perhaps you can find another belt mount strap that has a longer extension that would further lower the shoulder belt crossing path.
You presently have an 8 inch wall mount as seen on this site:
https://www.seatbeltplanet.com/seatb...ts/125/view/63
...but you may be able to find a longer one that can reposition the belt crossing to be more to your liking.
Chuck