The "Booksmart" star announced her engagement to producer Bonnie Chance Roberts in June.
After two flags were stolen and vandalized, the couple didn't report the episodes to police. This time it felt like the vandalism was spiraling.
The State of Mexico is the 29th of 32 states to do so.
"I seriously hope that the next workplace shooting occurs at our organization and snuffs out everyone who approved of this," one threat read.