This is The Guardian.

Today, how the death of a teenage girl

might force some of the world's largest social media platforms to change.

A warning before we start, this episode includes references to suicide and self-harm.

In case those topics are extra sensitive for you right now, this is a heads up.

Molly was a mesmerizing child. She was the youngest of our three daughters.

And they're all gorgeous people, but I would say that as a father.

But Molly seemed to, from the earliest of ages, have a capacity for caring.

She loved to look after other people.

Molly Russell's dad.

She also was inquisitive. She loved to find out about things.

She'd look at the world through wonderfully inquisitive eyes that sparkled.

She would be quiet at the time, work out what she thought was going on around her,

assimilate what she had seen and heard, and process it in a way I don't think I've ever known anyone else ever do.

Even though I only knew her for 14 years.

In November 2017, while suffering from depression, Molly took her own life.

Reeling and looking for answers, her father Ian sat at the family computer,

going through Molly's email and her social media accounts.

This digital world into which his daughter had been sinking over the past few months.

And that was when he started seeing the posts that she'd been seeing.

It looked like they'd almost been pencil drawn posts.

I can remember one that said, who would love a suicidal girl.

...