Hmm, just the way you described them, I had very different hooves pictured in my mind.
A pigeon toed or toed out horse, is not necessarily a lame horse, as your vet told you, so that's not the issue. Wonder if you could post some pics of her soles or email them directly to me, if you don't want them up on here. I may have an idea, and it's just that, but I need a recent pic to be sure.
Happy trails! Today is hubby's B-day, so we are off to grab dinner and go watch the Broncos play tonight.