Hi,
My Son has just got married, and my husband is his stepdad (although he dosent call him that). My in-laws asked what relation our Daughter-in-law would be to them, and i said Granddaughter as they call my Son their Grandson, they said not. If my Son is their Step Grandson, then she must be their Step Granddaughter, but as we dont refer to being Step whatever they should call her Granddaughter. I know its a bit confusing

, but my Son has always called them Nan and Grandad. Hope someone can clarify this.
Many Thanks
Maxine