BBM. but first what do you mean by "perhaps she was picked up..." That went right over my head.
Back to the BBM. My explanation, lazyness, lack of commitment to follow through, selfishness.... Someone/People (both in this case and in general) can't be bothered to follow through with plans already committed to if they can't reach the person immediately preceding the time they are expected. Too busy, can't be bothered with perhaps having to go knock on someones door to wake them and wait 15-20 minutes or so while they freshen up. Pure selfishness........
Think about it. I am sure we all have friends we know who we can count on to be there when they say they will, or call if they can not make it or need to change the time. And then there are others we know who are consistently flighty and can not be replied upon without confirming and then reconfirming plans last minute. The question which remains is why did KB choose to treat PB like someone who couldn't be relied upon and chose not to follow through on plans when they could not be reconfirmed last minute? Or is that just part of her personality due to the type of people she chose to socialize with?
Either way, I don't think it makes KB ultimately responsible for what happened to PB, nor does it necessarily ensure had she shown up PB would not have already been removed the apartment. Because the person most likely responsible for taking PB knew what time KB was expected and most likely ensured PB had been removed from the apartment prior to that time. And gave reasons why neither he or PB could be reached.....
In other words had KB showed up like planned she would have likely found the apartment already empty at 1:30 or so and at best, it would have tightened the timeline surrounding who we believe to be the main POI(s) PB would have been reported missing a few hours earlier, but who is to say that it would have made a difference? Especially since it reportedly took LE a few days to become convinced PB was not a runaway.
JMO