15 Things You Should Know About "Derry Girls," Direct From Creator Lisa McGee

"My friend's dad died when we were around that age suddenly, and it was a shock," she said. "The thing that really struck me was that we did grow up in this place where there was a lot of unpredictable stuff happening – you worried about a lot of violence – and this was a thing that could happen to anybody at any point – a natural cause thing. It was like 'Oh, God, no one's life's predictable, this could happen to anyone.'"

The shift Lisa felt a teen is mirrored in the finale, and she revealed that when the girls are walking behind the coffin, the stage directions say: "And just like that, they grew up." 😭