They were verified when she first started posting. Does it cost more to post verified and maybe she stopped?
Yes it cost money to get your pictures verified but I don't think there's any difference in the advertising cost once you've got your pictures verified though I don't know for sure
Over the years I hIave seen lots of SP"'s show up initially with an ad using unverified pics, and then a few days or week later they start using verified pictures in the ad (apparently it takes Leo a list a little bit of time to verify the pics).
Occasionally I have seen SP's running both old ads with non-verified pics and new ad s with verified pics,
However I've never seen an SP have an ad with verified pics and then later switch to an ad using non-verified pics