The father died and left an inheritance to his wife and 5 children equal to 1/7 of the house and the land. My mother did not let me and my son (a minor) live, citing the fact that I and my son are simply registered, and she, as the owner (but she did not enter the right of inheritance, although more than a year has passed), does not want us to live and wants to rewrite inheritance to my sister's children.
She was suggested this idea by a social worker who monitors these children. My mother does not give me the documents so that I can make the right of ownership for myself and prevents me in every way from living on the territory of the inheritance (my mother lives with my brother and sister's children in the house, and I try to live with my son in an outbuilding). Please tell me what I need to claim from my relatives in a court of law in order to arrange my inheritance?