I bet Sara didn’t have a mobile, or access to anyone outside the family, sounds like she was busy being caregiver to her siblings. I bet she was very useful to Beemish, Wonder if she’d even enrolled in a local school since moving.
If the 3 left on the Wednesday and caught a flight, there are only a few direct flights to Pakistan, BA to Islamabad arrives 625am local time for example, a few indirect flights land around the same time to Karachi…..which after allowing time to clear security it would be equivalent to 250am UK time. So maybe the father called the police after safely landing or called family to confirm they had escaped and a family member called it in, in full knowledge that the 3 were untouchable. Hopefully LE access phone records of the UK family members and go after anyone who has been an accomplice in some way.
Leaving a dead 10 yr old alone in a house is unforgivable.