A Great family benefiting from the attention somehow? Nero's thoughts immediately went to the Dom family. Besides the original issue with them forcing Patricks sentencing, they had never done anything to Nero's family - at least overtly. Even so, he would think that they would be at the forefront of trying to get rid of Nero and his parents.
If his mom had recovered, and moreover managed to get a job in the MIA, then families such as the Dom family, who used their power and influence to persecute others would be the first to suffer. Considering their own personal history, she would likely target them first, which is why they might want to eliminate Nero's family - or at the very least get some leverage.
But when he saw the look in June's eye, Nero knew it had to be someone else.
"It's the Grant family," she told him, after dangling the bait for a bit.