We're planning a memorial service at the Waterbury (Vermont) Congregational Church in June. We'll let you know when we settle on a date.

I'm not sure the phrase "released from life" is associated with any particular group, but it's consistent with the idea found in many religions that life on earth is in some way burdensome or constrained compared with some other state of being or non-being. (Consider, for example, "I'll Fly Away," performed by Gillian Welch among many others.) Mom lived with a progressive dementia for many years, and though I don't think she suffered much as her life wound down, if (as she believed) there is a soul or other persistent life energy, it's undoubtedly freer for having left her worn body.