Kash Death

Reality star Kash's mom is pointing the finger at the woman who has reality star attacked her daughter before Kash's fatal shooting ... telling TMZ she believes that woman should be behind bars for allegedly setting the deadly events in motion.

Here's the deal ... police in Oakland, CA say Kash was brawling with a woman when Kash's sister, Vernika Dunbar, came to her defense and tried to pistol-whip the woman ... only to fire a bullet that killed Kash.

Kash's mom, Cynthia, tells TMZ … she firmly believes her daughter's death was a tragic accident, insisting Vernika was trying to protect her sister.

Cynthia says Vernika thought she was doing the right thing by jumping in to defend her sister and never imagined the gun would go off. She insists her children would never intentionally harm one another.