none of that fits for me.. the timeline is too tight imhoo (this is just my opinion here)
The only other thing I can think is that the perp saw them enter the trial and drove in the access rode that was near where the bikes were left and waited on them to ride past.
That is what I think. I think it is also possible that they had met the perp before either or both had met him at the pool in Waterloo or somewhere else and had an "appt" to meet him at 12:30 at that spot (which would take them past Mr. C's on Lake Ave.). I think it might be connected to the late incident a couple of days earlier in Waterloo. I think the bikes and purse were where they were found the whole time and not moved. I believe they were taken away from E'dale. MOO