Going back through the press conferences to see if there's anything I might have missed. Here is an absolutely nonsensical (imo) answer from Ronnie Lawson about what time Summer was last seen.
Lawson : Her parents reported her missing right around 6:30 pm.
Reporter : Well, when was she...do they say when she was last seen ? I know she was reported missing around that time, but was she last seen earlier in the afternoon, or the day even...
Larson : That time is varied because they were searching for their child their selves.
4:20
How the hell does searching for a child prevent a parent from being able to say when the child was last seen ? What is interesting to note, however, is that when asked what time Summer was last seen, Lawson says, " That time is varied. "