depending on the loss and what transpired, normally the quiet bus ride home is supposed to be instrospective for the player (and probably the coaches as well), and while mistakes cannot be corrected during yoga or a feverish lament along a twisted Ohio road, it may allow some of those players to rehash certain aspects (ie, made a bad play, struckout with bases loaded, i cant believe such-n-such is on the team because she made 3 errors, etc, etc) of the game to better prepare themselves for the next challenge.
and yes, all ballplayers have the luxury of beginning anew the next day, or to be able to "make it up" during the next game in a few days. Think about football players, those fellas stew for one week in sweat, coaches yelling, and thier own hostility, no wonder they wear pads..I digress...
at least softball players have another chance later that Saturday, later that week...so to a coach, that silent ride home is to prove (probably) that the girls are taking it serious, "it" being the game, because most losses can be chalked up to missplays, missed oppurtunities (2-out hit, moving the runner, etc) and mistakes. And while i do know that some games are those marathon 12-inning 2-1 affairs that is won on a passed ball (or one of those, that-team-is-just-better-than-us 21-0 spankings), i think the coaches want to relay the fact that they are there to win and improve skills. When that doesn't happen, why should the bus be full of cheer and disco lights?
my dd plays in 7th, and if anything, the silence makes them madder (normally against a few culprits who couldn't catch a ball in the outfield).
as for the ride home, I'm sure there are a lot of DD's dads that turn down the radio to say," what were you thinking?" or "what were you swinging at?" routines. How do I know? because I do that routine, and 2, there's always one of those chain mail letters about parents behavior after a loss that gets passed from team to team. They wouldn't make those if some parents werent going ballistic.
as for me, we always try to compliment, than say what needed to be improved. NO dogging out other players, and then it's dinner time.
hang in there thunder_road, it sounds like you love the game, so no manner of silence before or after a game will deter you from acheiving your goal. that silence-in-the-bus mind game is old school at its best. Hopefully that helped