[ This is something she knows they've settled before, but Charlotte is real and present to her in this moment, and River thinks the guilt might swallow her whole when she sees the doubt in her eyes.

She reaches out for her, but Charlotte pulls away, out of her reach. 'You wanted to leave.'

River shakes her head, blindly tangling her fingers with the Doctor's when his hand finds hers. ]

No. I've loved being your mummy, Charlotte. We're a family. You, Dave, and me.

I'd never leave you alone.

[ Except deep in her hearts, she knows she already has. ]

Doctor, I can't.