" the comment was about watching college softball - SEC softball -". I dont know what SEC game you watched but it seems that the SEC teams are loaded with slappers. And sincerely doubt that your 3B can throw them out.
I sincerely doubt any of your slappers will be on an SEC team, let alone play on any SEC teams (not even TLI girls will play or even be on a team in that conference). So maybe her 3B won't throw out an SEC slapper, but I think she will throw out most of your slappers
Another wrong assumption is that all the slaps go to the 3rd base side.
If the ball's not going to 3B, is she executing correctly? I thought the whole concept of slapping was to hit the ball to 3B or SS, then try to beat the throw. I don't know why a good lefty hitter doesn't just swing away, and go for a double, why settle for an IF single. Does the coach not have confidence in her ability to swing?