I too discovered this issue while playing. I took my entire party in stealth, and I strategically placed them around the room. I took my rouge into the treasure and exit room and looted everything. When I came back into the Abode, and was ready to fight, I exited stealth on my primary character and the word "Surprised" appeared but the hag did not.
I free'd Mayrina and tried to talk to her but no conversation would ensue. Nothing happened when I left clicked on her.
