http://iscoresports.com/

At our last game I was not there to keep score, and so the game won't be entered into score because they don't record enough detail.

One player got a home run however. Is there someway I can just add this to her batting stats?

You can create a dummy game and manually add a home run to the game. It would not take into account the other at bats however, so would start to falsely represent things like batting average, slugging average, etc.

Yes, that's what I thought. Oh well.