Hi, do you have any pictures of her feet on solid ground so I can see the angles? Also some shots of the bottom of the hoof when clean. For trimming I recommend every 5 weeks. Some can push it to 6. By 8 weeks the hooves are overgrown and are either chipping or starting to cause wall from sole separation or sole stretching. Navicular is often caused by heels that are high and/or a horse that toe walks instead of landing heel first. If she is still barefoot have someone walk her on a hard surface and see if she is stabbing her toe into the ground first or if she lands solidly heel first and then rolling nicely through her toe. Basically with a navicular foot what happens is the “pulley system” that is in the foot that helps the horse pick up and move it’s foot is “stuck” so to speak, so the tendon that runs over the navicular bone puts pressure on the bone continuously causing pain and erosion of the navicular bone. Until her angles are correct and she begins landing properly these tendons won’t release properly. I am helping one horse right now with navicular and for immediate relief she is on a pain killer similar to bute, but it is a pill that can be used long term. I will have to see what it is called. I believe it is Prevoxx, but don’t quote me on that. She is much less ouchy. Now we are working on her feet. This horse is really weak in the back of the foot and has been for years so has toe walked badly for as long as I have known her. She finally has an owner now that is going to help her. We are getting her trimmed properly and then are going to start using boots and pads to see if we can strenghthen the digital cushion in the back of the foot and get her to land properly. It is going to be a long process, but I am confident that we can really help her.