Needless to say BOTH of her sons lived with her in that house way past the age of 21. My ex didn't object. Both were in their 30s when they married after her death and one moved out. Only one is still there with his wife. He may have bought his brother's half out. Our mutual friend no longer stops there since my ex died.
There was supposed to be a Will stating that the new wife, if he predeceased her, would have the house to live in until she died, remarried or chose to move out on her own. In which case our son would take possession of the house. My ex never mentioned the stepsons getting anything. Since their father was financially comfortable I assumed they would inherit from him plus the money their mother inherited from their grandmother's apt bldg in Ridgewood.
My son and I both made phone calls to the lawyer my ex always used and a few others in the area of MV. No Will was ever found. His lawyer there in Rego Park told me she remembered adding his wife's name to the deed and handled a few things for them at the time, but she claimed he made no Will at the time, at least not with her assistance or at her office.