To learn more about Sheila's relationship with Elton, read this:
https://www.dailymail.co.uk/femail/article-5145361/Alison-Boshoff-Elton-John-mum-died.html
To learn more about what a good friend Sheila was overall, read this:
To learn more about Sheila's controversial 90th birthday (and why she had every right to celebrate the way she did), read this: