Property purchased on the crow Indian reservation. My grandfather was enrolled in the tribe and could own property on the land. He is survived by my grandmother, but she was kicked off the land by her sister-in-law two years ago. There is a dwelling that my grandfather built on the property. He was given paperwork by his mother at the time with a written and signed agreement by her that my grandfathers family(children) would have a lifetime right of access across her own property to the five acres he purchased. My mother, my grandfathers daughter, has the originally written check that my grandmother signed and dated, the memo on the check tells what was purchased. Two years ago my grandmother was evicted from the property by her sister in law, what can we do to get the property back?