Merricks and my broody hen? : (

I take my 2 broody girls out often hoping to break them as we have no rooster... and so they drink and eat.
Yesterday our miniature leghorn could no longer stand- think it's merricks. I hand fed her avacado, and some plain yougart hoping the fat and probiotics would help.

Perhaps it's a broody leg thing from sitting so long? She won't drink much..

Off to get her a separate cage, b12, and hopefully she'll recover. Any other thoughts please?