She's been training to be the perfect spy since birth, and emotional manipulation is one handy tool. There's also the fact that she passed for normal before her cover was blown.
- Her current behavior appears to be sincere, although she's a pretty good actress.
"'Hibiki'? I killed her 35 chapters ago
Hansel is one of Hibiki's clone-siblings and Hibiki is Gretal.
Hibiki said her fellow clones looked
alike; she never said they were all sisters.
- Jossed. Hansel isn't related to Hibiki and Gretal happens to be that incompetent schmuck in Third-I.