User blog comment:IamJakuhoRaikoben/Chapter 345: Someone's Voice, Review./@comment-77.195.192.248-20130728093956/@comment-77.195.192.248-20130728110630

The man of Succubus could have a limit to his powers, if his powers could turn someone younger without limits, he could have turned Natsu into a baby, maybe his powers are only effective against people who are older than the age of puberty. For Minerva, she was displeased by the fact Lucy didn't want to surrender, so maybe she will target her and refuse to let the man turn her into a child, just to show how shie is weak and destroys her again, a victory against a child won't be funny for her