It's along the lines of an empath. She doesn't know it yet, but as a summoner she is able to feel emotions behind spells and connect to people easier. It wont be in this book, but a certain character will explain this to her and train her to become more of a warrior
Two betrayals in two chapters nice but it does preserve the balance of power between the two factions better. I do have an unanswered question that I might have missed in the earlier chapters about Pennie. On top of her being a summoner is she also an empath? That would explain her chipper attitude, someone who constantly had to feel hopelessness in a dystopian society would need to feel hope to stay sane.