The difference between NON-Gaited and Gaited WP horses is that the non-gaited have more of a better built stride than gaiteds for WP. In my personal opinion I think she would be better off doing GAITED PLEASURE. Its just like WP, but specifically designed for Gaited horses. Whether its a Foxtrotter or Paso Fino.
This is a Paso Fino WP Show:
And this a NON-Gaited WP Show:
You can tell the difference. Paso Fino's have more of a 'bunched up' stride, and Non-Gaited have more of a 'flowing and extended' stride. As of tips I really can't give you any. Because the judge will be looking for at the horses with the leveled heads and long strides, than the high-set head and bunchy stride. They will score you reguardless of breed. Because the origanal WP horse has a low set head and neck, flowing stride, & the rider is usually one handed. Now with Gaited horses you usually have to ride with 2 hands to keep the speed and head under control. Hope this helped!