Need to know about property inheritance rule

Hi, Need to have clarity regarding paternal property matter. My father passed away 3 years back & he was survived by my mother, my myself & my brother. Last year my brother also passed away. Since it was paternal property, before my brother’s death, a deed was prepared between my uncle, my mother & my brother for a clear division of the property. Now the entire property is going to be in my mother’s name as after my father the paternal property is supposed to be transferred to wife. Now after my brother’s death my mom is selling the property. We are getting confused by the various lawyers. My question is will my sister in law(widow of my brother) needs to give a NOC for this sale & share the sale amount. If by go by the logic then until my mother is alive she doesn’t need NOC of anyone including me because property is in my mother’s name. This property is not under HUF. But want a legal opinion because we are getting bullied. I can be contacted at [deleted] Thanks Tanu