On a personal level I’m truly sorry about your loss and I share your grief, although I have hardly known Estherelke Kaplan. You are right “Her passing leaves a great hole in the world, but her warmth and generosity live on in each of us who love and mourn her.”

Many who knew her in Toronto would probably say however, that she has in fact lived an active Jewish life in all its spiritual dimensions and not simply drew “from the Judaism of her ancestors”. (Although I realise that minimising the richness of the Jewish aspect of her life, could help your own credibility with certain people.)

Glastonbury and Estherelke’s life and work, very much reminds me of Asphodel Long, one of the founding grandmothers of the British Goddess movement. With great ease Asphodel reconciled a strong Jewish identity with the women’s spirituality movement and the Matriarchy Research and Reclaim Network, etc.
http://www.asphodel-long.com/index.html
http://www.asphodel-long.com/html/anti_judaism.html

At her funeral just over 4 years ago, on the altar there was water from the Chalice Well at Glastonbury, a place that meant so much to Asphodel and the Jewish Prayer, the Mourners’ Kaddish was recited in Hebrew.

I have no doubt, the very same prayer will be heard at the funeral of Estherelke Kaplan.