Here is the link to the BBC story.

http://www.bbc.co.uk/news/entertainment-arts-13137674

As GG noted at the SFX website:

'...she was magical. It’s strange to grow from a child who dives into the world of Sarah Jane Smith, seeing her heroism and also viewing the character as “the perfect girl”, to someone older, having met her, and walked on air in her presence. She was an integral part of something transcendent, and led her life in ways that a grown-up fan can admire. I’m crushed and broken. What can one say at this time without falling apart? Have you ever seen a dream walking? That was Lis Sladen… Rest in Peace, Lis.'