I think Agatha and Albia had an earlier discussion about it, shortly after they first met. No time to look for it now.
And I'm hoping that Albia can, and will, give some of that energy back. She might not have realized that she was taking too much -- and whatever her motives, I think she needs Agatha at least on her feet in order to avoid complications she probably doesn't want to deal with. If she'd wanted Agatha dead or incapacitated, she's had other chances before this.