Sorrest
At the beginning of this ff she demonstrated that the system allows her to see information about other people including whether they are aggressive or friends... but since she was kidnapped by that girl and her group, due to the convenience of the script this ability disappeared... especially because if she used it she would see that the girl was not a friend.
everytime i see psychos in such stories i always wonder why they cant get along inside their own group? the antagonists manage to somehow dont kill each other when they stick together so why not the heroes group too? as long as you point the psychos at enemies it shouldnt matter but they always implode.