My mother passed away on 3/25/17 without a will. I am her daughter & I would like to object to a petition for a yrs support filed by my step dad

My children, my husband & I lived with my mother & step dad for 4 yrs so I could take care of her. While we lived there, my mother gave me full control of her finances by adding me to her checking account & had me manage all the bills, money, & food for the 6 of us (step dad not included) for 3 of the years we lived with her. I found out today that my step dad has filed a petition for a years support to get the property deed to sell the property and I only have till the 5th to do something about it. My family was evicted from the home by my step dad after my mother passed and we are currently living with my father in his living room & spare room. Is there anything I can do to stop my step dad from getting the property. I have a family friend willing to help buy the property but since we were displaced by the eviction, I cant afford an attorney. My mother would not want my step dad to have or get anything especially since she wanted a divorce. Is there anything I can do?