How is Daisy doing? MBD can be bad, but it's also reversible even if the deformities remain. It's great she's eating again, I would just keep supplementing her and keeping an eye on things.

Considering euthanasia can be a very difficult process, but I'm not sure it applies here. I think a frog that wants to eat is a frog that wants to live, so I will always fight for a frog that has an appetite. I applied this to my frog Moochy when she was having all her issues, and she's not out of the woods yet but she has the hunger of a frog twice her size, lol.