Prosecutors said a March altercation culminated years of bad behavior by the actor. His lawyer said he had been bloodied by the woman he is accused of assaulting.
Ms. Vallow Daybell was convicted in Idaho in May in the murders of two of her children and of conspiring to murder her husband’s previous wife. She faces charges in other cases.
The case of Giulia Cecchettin, found dead days before she would have graduated, has prompted an outpouring of rage and debate on how to shift an entrenched culture of chauvinism.