I'm sorry ((())).
My Mum died the week DD1 was born. We talk about her a lot and have pictures around the house. We're not religious and explained things in very simple terms, which has evoved over the years and their understanding has changed. Grandma H was too sick for the doctors to be able to help make her better, it was very sad but she is in the sky with the stars and always with us in our hearts. In recent months we've had to elaborate as to where her body is (cremated), where are her bones?, won't she be cold in the sky?, is she hungry?....and most recently as DD has started religion classes at school, we've talked about heaven & angels and that that is what some people believe. For me the most important, and comforting, thing is to talk about her a lot and talk about my happy memories and answer questions truthfully and simply until more detailed responses are needed.
She who leaves a trail of glitter is never forgotten.