oh, they died on this date. it's -- it's -- it's a very rough estimate. and i know that law enforcement is using other methods to try to determine a most -- a more exact date. but from an autopsy point of view, it's -- it's a very rough estimate. >> so -- and, randi, just -- just -- can you explain to our viewers why that -- why you asked that question? because i mean, if -- if -- if she was not, obviously, alive on that day when they received that text, then it would indicate that brian laundrie or -- or somebody else, theoretically, sent that text to them. >> right. i mean, it's key because if she didn't send it and the text said that there's no service in yosemite, whoever did send it, were -- the question is were they trying to make her family or investigators even believe that gabby petito at some point had been in yosemite and perhaps they would have started looking for her there. >> dr. blue, can you tell us if