That would require having something called a conscience; something I see very little evidence of with Patty or his posse.
I too am undecided yet because there is not enough info. Her phone pings mean nothing to me it simply would show where her phone was, not her; just as we know KB's phone was with PF and it was not KB using it after a certain time on 11/22, this kind of thing is part of their modus operandi (is that the correct term lol?). I have a feeling KK was closer than some think, certainly not 12 hours away and I also have a suspicion that there was some attempt planned or made on 11/21.
I will say one good thing is that CB had voice contact with her daughter on Thanksgiving and that KB was seen that day. I for one would not believe the date of death if not for solid facts like that with the games these two played with evidence, phones, cars, etc. And with no body, there would be no way to determine time of death. I also still believe, however, the date of final death could be later than said as well but I am not sold on that thought.
In a case where almost all of the sights seen and dates and times come from the two involved who are known liars, it makes it difficult.
All speculation on my part and I certainly could be wrong.