Ashrian's heroic ability is that all minions who start their turn adjacent to her, are stunned. I've tried to read the rules the right way, upside down and sideways, but I can't find any way around this. Is there something I've failed to discover, that cancels heroic abilities? As the Overlord player, this ability annoys me no end, and so many campaign scenarios have become unbalances because she can just show up and hold two, three, even four monsters at bay while the others mop up with the one or two I have left…

Stun only "eats" one action to be removed.

The minion monsters still can attack or move with their second action.

Oops, did not realize that there was a duplicate thread. Seve-O's answer is in agreement with mine, but more detailed.