OP, did you get a PPE done on her? Maybe itís the camera angle, but she looks like she has some swelling below the ankle joint.
Side views on the hooves, while standing on something solid, would be better to look at how the rings end:)
Rings can be common whenever thereís a change of pasture, internal stress of some sort, even what appears to be swelling on the ankle can eventually cause stress to show in the hoof, as the hoof grows down.
may have to correct me but, the way I was taught is that laminitis or founder rings curve downward at the back of the hoof. Whereas stress from some other change simply go straight back.
That is also how I see the rings on both of my horses. The healthy one has rings from the seasonal change in the pasture and probably from trying to poison himself eating the grass mixed in the Virginia Buttonweed and he broke out in hives on his face & neck.
While the foundered horse had rings with a definitive downward curve at the back of the hoof, when he foundered. I donít pretend to understand the physics behind that:)
At any rate, if you could get your horse on mats and get some front, back, side, and sole shots of the hooves, in good light, more could be told:)