Shifting the timeline back a day....
What if..
What if the first messaging was Friday night, in anticipation of the wedding the next day? And THOSE messages ended abruptly?
What if the batch of friend suggestions went out Friday night? Or not until Saturday night, the day he may have used his phone to log onto her Facebook?
What if the Salida noise was Friday night?
What if the messages that seemed "off" were Saturday morning, around 8 am, but weren't from Suzanne at all?
What if Suzanne was murdered Friday evening, causing Barry to have a very bad night?
What if the friend from Indiana, worried that she couldn't reach Suzanne, who'd then miss the virtual wedding, contacted Barry, compelling him to access Suzanne's Facebook, to send a message, as if her?
That would fit with Barry at the Salida site Friday night, possibly late. The lady couldn't pinpoint WHICH night of Mother's Day weekend she heard noise. It also fits with Morgan's impression of him on Saturday morning AND his insistence she rake the beach area (to eliminate any trace of his activity the night before?).
So.... Suzanne did get takeout on Friday. For one? Or two? Where were the remnants of that meal? Any trash layered atop them?
I'm beginning to think that Suzanne did text until 9pm, when the conversation ended abruptly. Just not on Saturday. Friday.
JMO