Does this vent look ok?

I just lost two chickens to tumors so I'm a little skiddish. We picked up Ethel to inspect her vent and it looked horrible - the feathers were clumped and dirty and lots are missing. We tried giving her a little bath (which she hated), but the vent looks a little better now that it's cleaner. Any thoughts - is she just molting? She's laying still, but her egg shells are getting thinner and thinner. We haven't seen any worms in their poop and they free range in our grassy backyard all day. Her feathers are wet in the picture. Thanks.