I'M SORRY TO SAY THIS, BUT...
...I am NOT a fan of Mary Tyler Moore, and never was.
IMHO, she was greatly overrated as an actress, and her mannerisms irritated me unendurably.
I did love THE MARY TYLER MOORE SHOW, but that was in spite of--not because of--its star.
This show had clever scripts, good direction, and an excellent ensemble of supporting actors: Ed Asner, Valerie Harper, Ted Knight, Betty White, Cloris Leachman, and Gavin McCleod.
And it was a groundbreaker in depicting an independent career woman, although I found the character of Mary Richards extremely annoying, especially in the first few seasons.
I feel the same way about her whiny Laura Petrie on THE DICK VAN DYKE SHOW.
It's good that she devoted herself to social causes, such as animal rights and juvenile diabetes, but that doesn't make her another Mother Teresa!
But, condolences to her husband and friends.