"You!" Kirika was angry and embarrassed when she heard the answers from Setsuka and the others, but she found it difficult to reply to the girls' words in the current situation because what they said was true.
Although she had an A-Rank Phantasmal Object, Kirika couldn't fight directly against monsters because her ability required an intermediary in the form of something to control, such as an inanimate object or a monster's corpse. The stronger the puppet she controlled, the stronger her battle power would be.
Kirika can also control living things with her powers, but that only applies if the target is weaker than her and requires more effort. She could easily do that if it were just an ordinary human.