One theory regarding the FB check-ins:
Many of these "fake accounts" are supposedly former KU students who live in KC, but a few are also based in Branson MO, Columbia (where Mizzou is), and St. Louis. These accounts are actually pretty active, checking in one or two times daily to similar locations no matter what the city -- tanning beds, gyms, dog parks, etc. Based on the fact that the location is not only a check-in but also "tagged" on the FB post in light gray font, it leads me to think that someone really is "tagging in" here. (See red box)
Could these check-ins be real people using fake accounts to signal location for a drug exchange? Would explain why they only seem to frequent the same public, high-traffic locations over and over again.
IF we follow this logic, it means that Platte Landing Park is a common, frequently used drug-dealing location. That also aligns with Toni's motive to go up to Parkville, if PS Sr.'s comments on FB were to be believed.
What really eats at me is that there were only NINE MINUTES between Toni sending her last "omg pulled over" text message and the (unread?) text that came at 4:53 a.m. from the person she was supposed to meet up with. So what happened in those nine minutes?
Toni slid off the boat ramp before ever successfully meeting up with her alleged dealer? Or did she meet up with said dealer, they did too many drugs, and Toni got in an accident after he left? Or did Toni run into someone else and witness something at the park she wasn't supposed to?
I personally hope/pray toxicology has answers. The only way I'll believe it was an accident is if it turns out she was impaired.