Title: The Broken Doll. Sentence 1: Nina was at her aunt's house. Sentence 2: Her aunt was letting her play with her old porcelain dolls. Sentence 3: She was brushing the doll's hair when her head came off. Sentence 4: Nina went to tell her aunt, worried she'd be in trouble.
Luckily her aunt didn't mind and she even fixed the doll.