"Nooo. No. Not messing with you, and please, no heart attacks. I've been trying to be quiet about it because I didn't want to freak you guys out, but I seriously have no impulse control, so--"
So of course she'd come over. Why not? What could go wrong? Dagny's hopeful squinting had turned into hopeful smiling.
It could work out. 'No coronaries' seemed like a good start.