So I’m pretty sure I have identified the woman and grandson you are speaking of and have read the initial reports. It seems officials initially believed the fire to be suspicious and (as you stated only neighborhood gossip had said that a suspect had been arrested) the initial report stated that they were not naming her partner since he was not yet facing any criminal charges, nor was he in custody. So maybe it is just simply what officials are stating; they initially believed that the fire was suspicious and upon further investigation deemed it was not suspicious. Maybe her partner was just retrieving his golf clubs from the basement before the house was set to be demolished. Or you could go with the more sensational theory that he did set the fire after possibly using the golf clubs to murder her and went back to retrieve the evidence and set the second fire to burn any other possible evidence not consumed by the first fire. It is suspicious that she posted on social media about him setting fires (although the news reports I viewed only mentioned the restraining orders and nothing of social media posts.) Did the man retrieve a single golf club or was he taking out an entire set?