A Mother and her sons

(Female Mother Reader. Also, this is my first and only PoM non-crossover. It's inspired by DayMemeBeliever's Operation: Save Penguin-Kind and in the movie)
Y/N, a mother of three penguin chicks, is a secret agent. Her mate, sadly, got eaten by a leopard seal, leaving her with the chicks. She had to lie to them that their father was a secret agent instead of her, making up stories.
That day, she finally told her sons that their father wasn't a secret agent, which upsets them.
A leopard seal attack soon happened, and Y/N got separated from her sons, making her believe they were eaten alive.
But ten years later, little did she know, her three chicks, who were no longer chicks, were alive and they thought she was gone too. But they will be reunited soon.