Very sick 1-year old Cream Legbar hen, please help

[FalconLake]

I lost 2 of this breed...very sad. I tried so many things. The 2nd one was eating til the end. Her one leg went bad and then she couldn't get up. I had to move her everywhere to eat, drink, get sun, etc. It became too much. I named her Petunia...she was a sweet girl but I just couldn't save her.
I can tell you I won't buy that breed again.