Leonel had no idea what was happening so far away, nor did he have any idea that Aina had such a flaw in her Lineage Factor. Though… It should have been obvious. Leonel had fought a small number of Brazinger family members in the past, including one who had his life on the line, but none of them had ever gone berserk like Aina had.
That said, it wasn't quite Leonel's fault that he hadn't realized this problem. Aina had only gone berserk a single time around Leonel and it had been so long ago that he completely forgot.
Of course, what Leonel didn't know was that Aina had purposely not used her Lineage Factor after that moment for fear of putting him in danger again. Even while seeking out the limit of her power, she was willing to handicap herself in this way.