Welche Bedeutung steckt hinter der hier vorgestellten Vokabel aus dem Bereich Talking with colleagues?

Karla: 'What's wrong with Evan these days? He's become so quiet.' Daniel: 'Oh, he's split up with his girlfriend. I heard she has become a real bunny-boiler.'

she's a bunny-boiler

Do you know what it means?

• a woman who takes revenge when her boyfriend ends their relationship
• a woman who becomes very popular as soon as it is known that her relationship has ended
• a woman who works non-stop in order to stop thinking about the boyfriend who has ended their relationship