Remedy against the domestic violence from relatives

Dear Sir, A lady is living in her father's house with her mother & brother & she is unmarried & her father passed away but the property is still undivided , the said mother & brother trying to evict her from her father's house & even they are torturing upon her mentally & physically day by day even the said mother & brother are disconnecting the electricity of her room as well as they are not allowing her to access the common bathroom , they are not allowing her to take water . Actually they want her 1 share from the property when she refused , the said mother & brother started these illegal activities . The said lady lodged several complaints to the local police station as well as the higher officers of the police dept but till date, no action had been taken & no criminal case has been started & as a result, she is suffering day by day . I'm her neighbor & we have to see such incidents everyday but we can't do anything so in this situation,what remedy she can take from the legal side?