“I think that’s part of the fun! But sooner or later you might know from a memory,” she says in encouragement. Nel has confidence her brother will think of possible changes for them once the shock has passed.

Her smile sobers as she goes on after a momentary pause, still petting Gizmo, “One problem though is we have to keep it all a secret. We tell Mummy, but we don’t show her, and we definitely don’t tell anyone else.”