You think? I read the "I better not see you online" as Casey having every intention of continuing to be online herself.
You make a good point - similar to what someone else was intimating - that Casey thought she'd talk her way out of whatever was being discussed at that point with her parents and be online again later on as if nothing had happened...
My real reason for pointing that out had mostly to do with Cindy and the WS discussions re: what she knew and didn't know when she washed the infamous pants that shouldn't have been washed, and when she placed the first 2 911 calls, which were not frantic or worried at all. though I don't know at what time those pants were washed, I believe Cindy knew someone may have died in that car
before she picked up Casey and
before she ever made a single 911 call:
(1) car retrieved from amscot
(2) amy's phone number retrieved from car, that smelled like it had had a dead body in the trunk,
(3) cindy calls amy
(4) cindy finds out where casey is from speaking to amy
(5) cindy picks up casey,
(6) cindy and casey drive around looking for caylee, and cindy loks for an open police station,
(7) cindy and casey return home,
(8) finally, the first 911 call is made, followed by the second 911 call, followed by the third 911 call.