[ano]

In a current MP game the following situation has happened:
I teleport 4 mages into an enemy province with the following scripts (order is as in commander screen):
Mage1 (Adept of the Silver Order) - Body Ethereal, Returning (to protect StoneRainers with BE and Luck from the Sword of Aurgelmer)
Mage2 (Oreiad) - Summon Air elemental, Retreat (to hold off enemy force)
Mages 3, 4 (Oreiades) - Ironskin, Rain of Stones, Rain of Stones.

Everything went as expected except for the second Oreiad who didn't retreat after summoning an Elemental (she had 94 fatigue and was quite able to). She just ignored her turn and was killed by RoS. Log says absolutely nothing about it (first turn cast order was 1-2-3-4 while on second turn mage 2 was absent appearing only as RoS victim)
Does anybody know what could have happened?