Help My Family Stay in Our Home

Hi, my name is Ali and I'm 18 years old. My parents are currently going through a divorce due to multiple issues. Under the circumstances of the divorce, we will have to sell my house in a year unless we can buy out my father, which will cost over $100,000. If we have to sell our house, and even if my boyfriend and I can find somewhere to go (we currently live with my mother), my mom will have to pack up my 14 and 10 year old siblings and move them somewhere else (which she really cannot afford as a single mother), most likely to a new school, and start all over. I grew up in this house and I refuse to let my mother and siblings be torn away from it and left to struggle simply because my mother made the right decision for her to leave my father after 20 years. I know the goal is huge, but I beg of you, please help in any way you can. Please help me take care of my family. I'm still just a kid but I'm trying my best.