first of all, I really find it irksome that "natural horsemanship" is perceived as something different, something fluffy and full of rainbows and butterfly kisses (thought I would love to be kissed by a butterfly). Some things of NH might qualify for that, but plenty doesn't . There's plenty that was done by Ray Hunt and the Dorrances, and Branaman that is directly connected to Vaquero training of bridle horses, which all goes way back to training connected to Classical Dressage and the use of the Jakima (hackimore).
In any case, I would love to see your training videos.
The filly is beautiful.