drama queen; tragic heroine
Often used sarcastically for someone who exaggerates their own suffering, but can also refer literally to a tragic female character in a story.
She cries over little things, like a real drama queen.
The tragic heroine of this novel loses everything in the end.
Compound of 悲劇 (tragedy) + の (possessive particle) + ヒロイン (heroine). The sarcastic sense is a modern extension of the literal meaning.