The doctor told Justine not to play. I think JuJu is feeling sorry for Bovina as well.
Justine has made the right descision not to play that doubles. If Ruano Pascual noticed that JuJu can't do somethings in the doubles, she'll use that tactic in singles as well. And then ... She will be dangerous. If Pascual is still on the court, she might not be able to adapt her game directly.