She had bolted the door leading into his room, a most unusual proceeding on her part, she had had a most violent quarrel with him that very afternoon. 
She had left the door to his room open, which was unusual.
mnli hypothesis: She had left the door to his room open, which was unusual. premise: She had bolted the door leading into his room, a most unusual proceeding on her part, she had had a most violent quarrel with him that very afternoon. 