Step Families Support Group
Traditionally, a stepfamily is the family one acquires when a parent enters a new marriage, whether the parent was widowed or divorced. This community is focused on many of the relationships and issues that may arise within stepfamilies where you may find answers from some members and you may help other members with their questions.
I'd go with something along the lines of "Mom means what she says when she says it......but it's more of what she wishes things could be....than what she'll make happen". I'd add "I haven't heard from her, and don't know when we'll hear from her next, but I'll let you know when we do".