[Avalon Memories]

Based on the timeline, Laundrie must have killed Gabby sometime on August 26th or 27th. Gabby's mother was right to be skeptical of the texts received on the 27th and 30th. Given the approximate 2,321 driving distance (about 35 hrs) from Grand Teton to Ft. De Soto, FL, those texts were sent by Brian while he was on his way back home to hide the fact that she was already dead.

August 25: Gabby Petito's mother speaks to her daughter for the last time by phone.

Gabby’s final Instagram post is also published on Aug. 25.

August 27: Gabby's white van is spotted and videoed in the Spread Creek Dispersed Camping Area on the edge of Grand Teton National Park. (This video, by the way, is what led to the discovery of her body.)

Also, her mother said she received a text from Gabby’s phone on the 27th.

August 30: Gabby’s mother receives a final text from Gabby’s phone. The content of both the 27th and 30th texts causes the mom to be skeptical they actually came from her daughter.

Sept. 1: Laundrie arrives in North Port, Florida alone with the van.

Sept. 1–3 and Sept. 6-8: Laundrie’s parents spend the night in Fort De Soto Park, a Florida campground some 75 miles from their home, with their son twice in early September.

Sept. 11: Gabby’s family reports her missing

Sept. 17: Around 9:00 p.m. ET, the Laundrie family’s attorney confirms that the whereabouts of Brian Laundrie are unknown and that his parents haven't seen him since Tuesday (Sept. 14).

Sept. 19: FBI officials announce that a body had been found by law enforcement agents searching camping sites in the area of Spread Creek. It was later confirmed that the remains were those of Gabby Petito.

[SteveH]

the august 27 text from gabby to her mother is slightly ambiguous in the sense that at least in hypothetically it could have been an attempt from gabby to send her mother a surreptitious signal that gabby was having difficulty with brian: in particular, it was unusual for gabby to refer to her grandfather by his first name (stan or something like that imho), and the conjecture is that this was the signal (in contrast to brian using the phone and referring to stan without knowing that this would have been unusual for gabby to do).

this in turn would hypothetically move the latest possible time of death up a day or two from august 27th.

[DJ MacWoW]

Gabby was last seen at a restaurant on August 27th.

Brian Laundrie argued in Wyoming restaurant hours before Gabby Petito vanished: eyewitnesses

England also provided a credit card statement showing he spent $60.88 at the restaurant Aug. 27.