"Not usually," she says. "Until today, I thought that the only people who didn't go thump were," she simplifies a little to avoid alarming the three-year-old, "dead. But you're perfectly alive."
Lizbeth nods. Virginia listens to her.
"Yep," she says, "completely regular thumping."
"Gina, if people who don't thump are dead and I am alive and don't thump does that mean I will not ever die?"
"...Probably not. People who are dead also don't move around or breathe or talk or eat, and you do all of those."
She shakes her head. "Never mind, sorry. I'm just very confused. And I wouldn't like it if I found out that Chris knew all about this and then didn't tell me."
"Part of what a babysitter does is make sure you're safe," she explains. "Whatever the reason is why you don't have a heartbeat, it means that you don't work the way most people do, and not knowing anything about that means I might not be able to do my job. So if Chris knows, it would be irresponsible of her not to tell me."
"...Could you start thumping if you tried?" she inquires. At this point she is willing to believe it might be possible.
"No. Everyone else just does it without trying, and we couldn't stop if we wanted to, and if we did stop we'd die."