1. IF Brother's Wife was divorced by Brother and IF she is remarried, THEN she or her daughter is legally NOT entitled to any movable or immovable properties of your deceased brother and neither your personal property can be attached or put into legal litigation.
2. You are as legal heir are entitled to claim 100% property of deceased brother and there is no criminal or civil prosecution that is possible on you for such things.
3. Apprehensively the divorced woman is trying to intimidate and extort her divorced husband's property by threatening & intimidating you.