kaykay,
I looked at the pedigree, and looking at the mare, nothing screams that she is recessive. That is far from saying she is a non-carrier, she has a possibility of being a carrier. Her Grand sire on the dam side never had a dwarf, but that is 2 generations back, a lot of other genes are "in" your mare, she only has approx 25% of his genes. The other horses close in her pedigree I do not know about.
Her conformation is not ideal. That has nothing to do with dwarfism. Her underbite, I cannot determine in this manner if her underbite is genetic or due to lack of care with regards to her teeth. If it is genetic, it could be due to dwarfism expressivity or it could be just that she has genes for having an underbite. Dont confuse bad conformation or independent inferior genes with dwarfism expressivity over the dominant normal genes. In other words some horses have less than ideal conformation independent of possibly carrying the dwarf gene. Clubfoot does not necessarilty have anything to do with dwarfism, I think I expressed that in another thread. Clubfoot can have numerous causes including lack of proper hoof care, or bad leg conformation, independent of dwarfism influence. Yes she is a ittle long bodied for her leg length, but that again really has nothing specific to do with dwarfism.
Sorry I wish I could give you answer more specific.
John