Tim also confirmed that while the 76-year-old singer "is sick", her family is "trying to keep her spirits up and go from there".
Franklin cancelled planned concerts earlier this year after she was ordered by her doctor to stay off the road and rest up.
Dubbed the Queen of Soul, she announced her partial retirement a year ago, saying she would release one last album and perform at "some select things".
She was the first woman to be inducted into the Rock and Roll Hall of Fame in 1987.
However, he added he is concerned she may be upset by reports on her health: 'She's watching TV, so god forbid she sees all of this 'Aretha's dead, ' so I don't want to dampen her spirits on that'.
Aretha never forgot Buffalo and would often talk call out Queen City street names that she remembered while performing on stage. "The family is asking for prayers and privacy".
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"My prayers are with Aretha Franklin and her family during this hard time", tweeted rapper Missy Elliott.
He said he never inquired as to what was wrong with Franklin.
"I loved how she has an ability to touch people's heart with her music", Johannessen said.
Actress-singer Mandy Moore, who stars in "This Is Us" with Brown, said Franklin has "the most incredible legacy". It's from 2015's Kennedy Center Honors, and it's the time that Franklin brought the house - including President Barack Obama - to tears.
In an unusual move, a tribute concert produced by Live Nation and spearheaded by Sony Music Chief Creative Officer Clive Davis, who signed Franklin to Arista Records in 1980, has already been announced.
Franklin last sang in November 2017 for the Elton John AIDS Foundation in NY.
"She gives to the needy, the homeless", Franklin's assistant Fannie Tyler told assembled news media while thanking the church for the vigil.