The children are drawn towards a need -- a void they want filled -- as parents do their best to keep their lives afloat. Just because a way of life or method worked in the past, one doesn't necessarily keep working in that same manner.
My dad came out 14 years ago when I was 21. Since then, my parents have divorced. My mom remarried a few years later while my dad made up for lost time in his gay dating career. Life in our family has been.. interesting.
I loved my "step-grandmother" as much as my biological grandmother. She loved me unconditionally. Titles meant nothing to me. Her actions meant the world. I am now a "step-grandmother" to 10 grandchildren.