How does Jem react when he opens Mrs. Dubose's gift? give reasons for his reactions.

Jem feels both surprised, guilty, and saddened when he sees her gift. The camellia was a reminder for the reasons he spent time with Mrs. Dubose, but it was also a sign of forgiveness.

Jem opened the box. Inside, surrounded by wads of damp cotton, was a white, waxy, perfect camellia. It was a Snow-on-the-Mountain. Jem’s eyes nearly popped out of his head. "Old hell-devil, old hell-devil!" he screamed, flinging it down. "Why can’t she leave me alone?"

In a flash Atticus was up and standing over him. Jem buried his face in Atticus’s shirt front. "Sh-h," he said. "I think that was her way of telling you—everything’s all right now, Jem, everything’s all right. You know, she was a great lady."