Interesting/fascinating question.
Although I guess if you're convicted of murder your testimony may not be taken that seriously.
One more thought , if the rare chance that somehow the Jury's verdict is not guilty and I really hope this doesn't happen! But geesh if it does then wouldn't CN's charges be null and void/ dropped? Soo why would she want to help the crown?? She would want to help DM and MS. I am not holding my breath that she will drop any bombshells in her testimony- hope I'm wrong !