I'm sorry it's not getting better. I'm glad you're able to make things as good as possible for her. You just don't want her suffering 💔. I can tell you love her!
Aww, poor girl. She is blessed to have you as her duck keeper though. It's clear you love her and really care and are willing to put in the effort to help her and make her happy. It's so hard to see them suffering and not know how to help.
I'm so sorry for your situation with Rosie. It's so hard with the pekins because they have so many leg issues. I had three pekins and ended up using hobbles due to splay leg when they were little, but once they're grown it's hard for me to imagine them helping. Her hocks look swollen so maybe...