[thejeff]

Also, fluffwise all Mothers and Crones start out as Daughters, trained in Avalon. Since, not only is there no mechanism for Daughters becoming Mothers or Mothers becoming Crones, but Mothers are recruitable anywhere, there must be a reservoir of Mothers, formerly trained at Avalon roaming throughout the land, but not attached to your military. These are the ones you recruit. Obviously these Mothers have Wardens to guard them, also previously enchanted in Avalon. Those are the ones you can recruit.

Sometimes it doesn't pay to look too closely into the assumptions behind the game.