He's actually able to rest, while maintaining it; not quite sleep, but enough that he won't feel entirely exhausted. If he asks Night to relieve him, she'll explain that she can't manage the healing energy, like him or her sister.<br/><br/>By morning, though, while Meridia hasn't awoken, she's also doing well enough that she no longer needs the spell, and the gray patch has faded from her skin, indicating that the curse, or whatever it was, is broken.