The chief rabbi’s daughter, who was diagnosed in 2009, is survived by her husband Jonny and their two children, Kinneret and Elitzur.
A Facebook page in her memory pays tribute to the “devoted wife” and “amazing mother” who “used up every bit of her energy even at the most difficult of times to shower them with love and affection.”
Rabbi Mirvis urged all those seeking to support bereaved loved ones to offer practical help.
“In the course of time, those who have suffered grief are hardly likely to remember the words you’ve said.
“I think we should primarily focus on two things; the first is to be there, be with people, give them that support, cocoon them with the warmth of your care.
“Number two, practical help. What can you do to help?”
In a video released on Tuesday to mark National Grief Awareness Week, Mr Welby said grief can sometimes catch you by “surprise.”
“There are days that are predictable. And then there are other days when suddenly something happens.
“It happened to me a couple of weeks ago, and I just suddenly thought, what would she be like?,” he said.
The full interview is on BBC Sounds