Remembering back to LS' "Cousin Itt" interview, she sounded almost too calmly-matter-of-fact, maybe to the point of being giddy. It seemed she was experiencing a feeling of 'relief ', which I fathom must have stemmed from a combination of fostering deep hatred and aggravation having been ultimately satisfied by her evil act.
Also remembering back to the RD video, LS appeared to be leaning forward in her gait, moving with intent and purpose. Her movements abrupt and most noticeable was her seeming annoyance at having to pick up from the ground an item that Gannon dropped while attempting to enter the truck.
LS' then released a written statement in which she attempted to explain away some issues, and in that writing we see LS' true personality beginning to poke through the facade; her aggravation apparent as her initial 'runaway' narrative blew up in her face and her 'Cousin Itt' interview failed to stem public opinion.
When LS realized she was not having success in her attempts in swaying the broader audience she resorted to SM outlets with select postings, hoping to at least retain the few ardent supporters still standing in her corner.
LE's announcement of the Douglas County searches must have riled the nomad in her, causing to her retreat to more comfortable surroundings; family was her last resort.
When the vice of LE clamped down on her in S.C. she knew she was absolute and complete burnt toast but such a feeling would not cause her to immediately give it up, to become remorseful and cooperate.
There might be an indeterminate amount of time that goes by where LS will deny many things, with a hopeful belief that no jury would convict her without a body and even then, by the time Gannon might be located, if ever, his body could not provide enough or any clues as to exactly what occurred to him. In her mind, that's reasonable doubt.
In the world's eyes, it's murder.