Bicycle detail

My mom and her boyfriend were at Shinto Bar and they would bring my bike sometimes. We lived in Floods mobile home park in N Fond du Lac. They would go to the bar and I would ask to bring my bike. I went inside to use the bathroom and came out to discover my bike was stolen. I can not help but believe that they had something to do with it because I do not remember a police report or anyone having empathy for my loss. That bike meant a lot to me as a kid and gave me identity. At the time I didn’t realize how rare and expensive that bike was. It didn’t make sense that my dad could afford it at the time either since my mom and her were newly divorced. I would love to solve this. I suspect it was taken by someone locally and was not random.