More details please.
How long have you had her?
How old is she?
What was she used for and what are you using her for?
I'm not a lameness expert by any means, but I don't see any lameness. She's a shorter-strided horse, so that looks to be just how she moves. She doesn't float. There might have been barely a head bob on one of two occasions, but certainly not a glaring lamenss at all.
Unless someone else can see something ......
∞•*˚ Βгįťţαňγ ˚*•∞
It is not enough to know how to ride; one must know how to fall.