L'Wren Scott, the long-time girlfriend of Rolling Stones frontman Mick Jagger, was found hanged in her apartment last month, without any kind of suicide note.
Her sudden death led to Mick, and the rest of the Rolling Stones, postponing their Australian and New Zealand leg of their tour, which they will resume later this year.
Breaking her silence on the tragedy, Georgia tweeted: 'I miss L'Wren so much and I am so sad she isn't here anymore. She was such a big part of my life. I will never forget all the fun times we had together.'
'She was such a big part of my life. I will never forget all the fun times we had together.'
She concluded: 'She was part of our family and always will be. Rest in peace.'
However her tweet was replied to by a troll, who accused her father of causing her death.
Elsewhere, grandson of Rolling Stones member Ronnie Wood said that despite the shock of L'Wren's death, Mick Jagger had 'been through plenty of things' and was confident the star would 'overcome being sick with grief.'