He's married, so can only be a childcare bubble, so he's not needed today. They just use the word 'bubble' to break the rules, like lots of other covidiots.Does her dad live alone? He could be in a genuine support bubble with her sister's family if so. So they could technically be altogether today.
I'm not buying it though that they didn't spend the night together. Who would get up and drive at that time ?!