Is the upper part of her leg swollen or just the way she is holding it? it looks like it is bulging out some. I would not do is let her run. I know at times it is hard to stop but with her legs being weak I would try to keep it from happening . Get her back on the b complex and meloxicam and keep her where she can rest her leg. But use the pool for therapy to help build up her muscles. When you get her back where she was with walking good again leave her on the liquod b for a week after then you can switch to Nutritional yeast daily, but I would def make sure she gets either of these everyday for the rest of her life. Many make sure their Pekins get this daily.
Bless her heart. @micaelasducks you could also use hobbles for the time being to keep her leg in proper postion @CoriM is a good one to tell you how she did it for her Pekins.
Bless her heart. @micaelasducks you could also use hobbles for the time being to keep her leg in proper postion @CoriM is a good one to tell you how she did it for her Pekins.