Great Mothers not calling to assist when a new enemy is doomed.

Blessed allies are called to assist whenever a NS uses a special ability, when you kill a Doomed enemy, they gain a bonus turn and use the granted ability doomed again.

Its a granted ability, not a basic, so it should call blessed allies to assist. For instance using doomed triggers frenzy on Night trooper, so it does count as a special ability, it's just not calling to assist.