Oh no! I just got done looking at the pictures from the link you sent and while doing it I can safely say that her joint isn't swollen at all. That being said as I felt further up her leg I noticed two grape size swollen lumps one then the next settled between the knee joint and hip joint! What could that be?!!!!
Like the sling? She's seems to like it but has to be watched while in as she tries to move around and get tangled.