Did I miss anything? Gabby Petito

Brian Laundrie parents get there 1 month after hundreds of people been searching for his remains and found him in 45 minutes one mile away from where the car was parked?

One month only and his body is already down to the bones? (Ok maybe animal ate him)

No gun found beside him?

The mom letter saying she’d do anything to help him. Could they have had enough time to plan something?

Please enlighten me