Bummer that she’s getting worse not better.
An easy test- I’d take away the free choice Orch/Alf and replace with a lower energy/sugar hay. Many horses also react to Orchard. Can you try straight Timothy? Usually it’s available this time of year and my horses love it and much less energy.
Also anecdotally, ration balancer (Triple Crown) made 2 of mine both way way too “up” and freaky. Maybe go to TC SR. as it’s
lower energy and a complete LOW STARCH/Sugar feed.
I’d suspect you’re feeding her too well, for starters and she just doesn’t need it.
I would hope it’s something easy like overfeeding.