I'd also let friend know. She may not realize how annoying it may be for those that aren't friends with business owner.
I really don't think I can do that. I am not very close with FB friend, just through our husbands. We are nice and polite but I wouldn't call her a good friend.
The business owner IS one of her best friends, and if friend finds this acceptable it's really none of my business.
The most I can do is just block her from my feed.
But last night this came up with a mutual friend and he says these taggings are driving him crazy, too.
The only possible way I can bring it up is if she asks me if I've seen her photos on FB, and I tell her that unfortunately I don't get her on my newsfeed anymore because there were more photos of her friend's business wares than of her. However, that isn't really a situation I see happening.