Michael Wilson and Dakota Saldivar, both 17, fatally beat their mother Dawn Liebig, 46, and buried her in a shallow grave. They face charges of open murder, conspiracy to commit murder and domestic battery with a deadly weapon in the stabbing and bludgeoning attack. Saldivar told detectives that he and Wilson decided to kill Liebig because 'they couldn't take her complaining,' police said. Saldivar and Wilson planned to stab Liebig in the jugular vein so she would die quickly. They waited for her to go to sleep and Wilson stabbed her in the neck. Saldivar then bludgeoned her in the head with a hammer about 20 times, according to police.