I certainly didn't read all this but here you go:
http://www.scstatehouse.gov/code/t16c003.php
The highlight:
SECTION 16-3-10. "Murder" defined.
"Murder" is the killing of any person with malice aforethought, either express or implied.
I just don't think this can be proven in this case. If what you say is true, that they can't be charged, or convicted of another crime in SC, I don't think they get anything.