She suggested songs by Kanye West or Kid Rock "might be more appropriate".
Mrs O has accused the X Factor mogul of ageism.
The rock singer has suffered a period of ill health in recent weeks.
"We are overwhelmed and truly touched by everyone’s thoughtfulness."
She sent a message of support to singer Samantha.
Featuring the weird, the wonderful and the downright bizarre.
But then again, who does at this point?
She had been signed up to appear as a judge this year, but pulled out just weeks beforehand.
She will not be appearing on this year's live shows as planned.