How to get a share in ancestral property

Sir my father heve been debarred his legal right on ancestral land by making an inappropriate will and distributing land to the grandsons mischievously in a tricky way. Doing this girl child have also been debarred her right in the Father's property saying being given dowry n gifts at the time of marriage. Though 35 year ago father who distributed land by himself quite fairly but later on will was made mischievously which also stunned the old man but he died soon without correcting the will. Lower courts denied my father n his sister's plea in distt court, matter is now in high Court shimla HP. Pls guide dinesh [email protected]