Annisa should probably do more physical exercise. She hates it - building things with her hands is much more fun - but that's why it's so good for mana building, and she has to fill that entire necklace before she can be building mana for herself. She doesn't want to look like she just mindlessly copies whatever Daria's doing, though, so she keeps working on her bookend until it's all done, and then sits with her back to the wall and no chair, legs trembling, which gets you fantastic mana generation in the last minute before your legs collapse of it.