I didn't even realize that she summons them to the fight until this convo. What turn does that happen? I haven't even got her to negotiate with me in the last few patches.
Otherwise, the fight gets really tough. In her first round, she sets the cage on fire and calls for the masks. From the second round on, she calls her clones.
This means that if you sneak past the masks and then confront Auntie Ethel, she will summon them for support. If I remember correctly, this only happened during the last Patches (7-9) because Larian wanted to test different difficulty levels. But no idea if it wasn't like that before?
Here is my documented approach
https://forums.larian.com/ubbthreads.php?ubb=showflat&Number=843515#Post843515
