noun
girlish mind; girlish innocence
Refers to the feelings, thoughts, or innocence characteristic of a young girl or daughter. Often used in literary or poetic contexts to evoke a sense of youthful, pure, or naive perspective.
娘心を傷つけるようなことを言ってはいけない。
You mustn't say things that would hurt a girl's feelings.
その詩には、娘心の繊細
The poem captures the delicacy of a girlish heart.