Melva was very dangerously at her limit. Her sight was getting blurry as her body could not handle the strain. Every muscle in her body protested for her forcing it to move when it needed rest. However, she could not afford to rest now when Alden needed her support.
Alden was now fighting Eudora one on one in the underground tunnel. Melva wanted to support him, but her body would not allow it. She could not even properly see the target, so she was not confident to let go of her arrow. And performing another healing magic was impossible during the current state of her body. She might pass out again, or even worse, she might die.
Without her puppets, Eudora was significantly weaker. She had no puppets to fight for her and protect her when she needed it. She had to move herself and use her own power to attack. Without Arlie and the other puppets, Alden was simply stronger than Eudora at the moment, because he was in his own element.