So...was it accidental? Or in self defense?
Even if it was self defense, it sounds like she’s talked herself into a court case.
What degree of certitude is needed to bring SYG into the picture? I’d say more than that which is had by having a story that varies like this. We can’t tell if this is a lying vengeful thing or crazy or what, so hence a trial where the prosecutor gets to try to prove it was a crime.