I am absolutely not an expert, but I thought I would throw my 2 cents in based on all the research I have done recently.
First I don't see why you would need hoof supplements if her hooves are otherwise healthy and she's on a good diet. I'v read lots of your posts so I would assume she is.
Second, based on the pic of the bottom of her front hoof, she looks to have under run heels and long toes. Like the forward foot syndrome. I'v read a lot about that due to a yearling that seems to be suffering from the same thing. The way I understand to fix this is to trim back the toes each time you trim and leave the heels alone except to ensure they are level. Also from your pic the bar on the left is way longer and appears stretched compared to the other one. Maybe even slightly laid over. Again I am no expert but I have looked at hundreds of pics, videos and articles and if I had to assess the condition of the hoof that would be my opinion.
If you are noticing some improvement doing it the way you are, I'd continue to do it that way and see what happens.