I invested money and bought land in my father in law name

I am a female and my husband is the only son and has two sisters. When we were married my husband's mother and father came from native and stayed with us. After sometimes we decided to buy land to construct property and bought 05 cents in my father in law name partial amount given by my in law and partial amount from my parents as dowry. And later constructed house from my savings and my parents supported money. Now my in law wants to share the property equally between daughters and son and my sis in law With her family is staying in My house. My husband is not talking a word against his parents and everyday I m facing harassments from my in laws and sis in law what should I do to get my invested money back and leave them