Well, I know chickens don't swim, but does anyone think its possible to mabey help her, don't they do that with over weight dogs, help them move their legs in water to build up leg strength. It may help her.
Mabey its like stargazing, where the chick can't keep its balance, so it wobbly legs and can't stand are symptoms of stargazing, I believe it is a neurological issue, but I don't know for sure, ill rubble check.