After looking at her again, her colors appear much lighter not darker, compared to her old pictures and the other clown. Shes also constantly opening and closing her mouth. Her mouth still looks very white. Does this contradict it being hexamites?Test with frozen mysis or frozen artemia as @JaykS suggest. If they still spit out and if they get lethargic, daker colouration and shy - look for stringy white poops. if all of these indications happens (spitting out/not eat, lethargic, dark colouration, shy, hiding and stringy white poop) - it could be an acute infection of flagellates from the family hexamitidae. The only thing that will help in that case is drugs based on metradizonole (or its derivatives). It can be administered as bath and your aquarium seems to be without other lifeforms - it means that you can treat in the aquarium. However - your fish seems to have their natural colouration and do not hide - I doubt it is a hexamite infection. If you treat with metradizonole like drugs - be aware that it will also wipe out your fishes natural gut fauna (it is effective against the normal gut bacteria too). When you restart the fish after that treatment - it is important to use food that is very easy to digest like frozen artemia and in very small amounts in the beginning. IMO - this is a treatment that should be done only if you are sure it is a hexamite like infection - not as a safety treatment.
Sincerely Lasse