Hi, I'm Andre Marcotte (nee Ross) and I found your post on ancestry.ca, indicating your mother was Alice's sister.
My mother, Claudette Menard, was Alice's daughter. I would be interested in what information you can shed on Alice's disappearance.
All I've been told, by my adoptive parents, is that the Menard kids were put up for foster care after Alice disappeared and when Laurent went to jail. The police also unearthed the yard to try to locate her.
I hope you can provide more information.
Thanks for your time.