I would get a referral to a canine eye specialist right away. If she has a condition that could be repaired, such as a retina problem - she can regain her sight WITH TREATMENT. Without treatment, she could lose her vision completely. Very odd that your vet was willing to wait! Vision problems should be treated as URGENT, and not just a wait and see.
I assume you mean that her pupils react to light appropriately. That is fine, but she is having problems with her eyes so SOMETHING is wrong somewhere inside the eye, or within the optic nerve that transmits images to the brain. These problems don't get better on their own usually.
Have you spoken with her breeder? Do hereditary eye diseases run in her pedigree?
I can't overemphasize how important it is to get this thoroughly checked out by a specialist or her vision could deteriorate into blindness and that is NOT reversible.