Agatha Christie said this quote

She's not sensual. She doesn't want affairs. It's just cold-blooded experiment on her part and the fun of stirring people up and setting them against each other. She dabbled in that too. She's the sort of woman who's never had a row with anyone in her life--but rows always happen where she is! She makes them happen. She's kind of female Iago. She must have drama. But she doesn't want to be involved herself. She's always outside pulling strings--looking on--enjoying it!