The Question and Answer section for Rebecca is a great resource to ask questions, find answers, and discuss the novel.
Maxim kills Rebecca when he learns that she is carrying another man's child, a child that she throws in his face and plans to pass off as his.
"God, how funny," she said, "how supremely, wonderfully funny! Well, you heard me say I was going to...
From the text:
'Did she use it a great deal?' I asked.
'Yes,' he said. 'Yes, she did. Moonlight picnics, and - and one thing and another.' We were walking again side by side, I still humming my little tune.
'How jolly,' I said brightly....
Rebecca threatened to have Ben put in an assylum.
If I catch you looking at me through the windows here I'll have you put to the asylum," she said. "You wouldn't like that would you? They're cruel to people in the asylum," she said.