However, her family later found she had been viewing material on Instagram that was linked to anxiety, depression, self-harm and suicide.
Her father, Ian Russell, has called for social media companies to “take responsibility” for the content they are making available to young people.
The Government is currently drawing up a white paper on protecting children from online harm, which is expected to bring in new regulations for the social media and tech companies.
The Telegraph is campaigning for a statutory duty of care to be placed on tech companies to ensure children are properly protected online.
A spokesman for Instagram said: “Our thoughts go out to Molly’s family and anyone dealing with the issues raised in this report.”