DONNA: Not what you'd call a natural parent, are you?

DOCTOR: They stole a tissue sample at gunpoint and processed it. It's not what I call natural parenting.

DONNA: Rubbish. My friend Nerys fathered twins with a turkey baster. Don't bother her.

DONNA: She [Jenny] belongs with us. With you. She's your daughter.

DOCTOR: She's a soldier. She came out of that machine.

DONNA: Oh yes, I know that bit. Listen, have you got that stethoscope? Give it to me. Come on.

JENNY: What are you doing?

DONNA: It's all right. Just hold still.

(Donna listens to Jenny's chest.)

DONNA: Come here. Listen, and then tell me where she belongs.

DOCTOR: Two hearts.

DONNA: Exactly.