Godhead plays Blolitaire.

COWI: I mean, she has a point. We are talking about the girl who shot her own eye out. GODHEAD: Hum! We just thought that if we gave her her own gun she'd stop obsessing over ours--you know, the ones we need to build our ship? We didn't think she'd hold up a church and stage a revolution until at least the third day she had it. And by then, Walnut would be lightyears away. COWI: It bought you resources, but costed you time. Hmmm...Here's an idea: Why not go back and keep her waiting for the gun a little longer, as in, until after Walnut is done building her ship. Then fly away, she never gets the gun, and nobody gets hurt. GODHEAD: It's fine, CoWi! Walnut is in charge of lying to Lisa Sharp and she's doing a great job.

You know, even though Walnut is just an alien occupying Lisa Sharp's sister's body, they've been stuck together for quite some time now. Maybe this isn't the reasoning you'd expect from a supergenius, but Walnut doesn't want to leave earth without giving Lisa Sharp a keepsake because it would be, I don't know, rude?
COWI: Or Walnut's just scared of not giving her what she wants.

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