Responses
i think the author will make it possible. and it's likely that the magic they get from fellow sorcerers are much much lesser than when they get from their own maidens plus it's more inconvenient when it's sorcerer to sorcerer since the original sorcerer would still have to get their own magic from their maiden. so in the end maidens are still needed but author can make it possible that a fellow sorcerer can also provide magic back since as seen in previous chapters, there has been instances that they used their own magic to heal/restore a human's energy.

uhm lemme guess. jacques ran out of magic and she can't exactly have momo give it for her so she's trying to get it from theo? and theo probably thinks he owes her for helping save ume...