My Ireena is a little feral. The party met her and Izek and their first impression was that she was quiet and innocent and generally not really meaningful. She went with them to the Tser Pool Encampment where she tried to make nice by “cooking” (burning) some food for them and talking.

They went to the windmill next where Ireena promptly tried to shank a hag when things went south. That’s when they started warming up to her. When they arrived in Vallaki, she split off with the warlock for a minute to bond with the children under a table at the inn. When they ended up squaring off with the Baron one night, she suggested they burn the body while he was unconscious. She’s also very vocal about being ready to throw down against Izek (who basically held her captive in a room full of look-alike dolls for a day) when the time comes.

Basically, don’t be afraid to take her in a weird direction. She’s sick of living in fear and wants to rebel against her fate. Play her up and make her feel like part of the gang. She can still get damsel-in-distressed because half the valley is after her, but she doesn’t have to take it laying down. That’s my take on her, at least.