Some of the Discus in this thread look Fuzzy , they may have a secondary infection which Metro will not help. I would advise trying Methylene Blue, FMG or a short dip in a 2 PPM solution of PP. lol
Patty, You may be able to entice her to start eating with live foods.. This time of year we can find a ton of small insects and larve as well as small baby earth worms. Avoid ants and beetles but its worth a try with others including mosquito larvae. LFS that sell marine may also have live Brine shrimp which is an excellent food for getting a fish to eat.
hth,
al