Keep in mind the Abyssal hordes not only slaughtered the people she was sworn to protect and left her homeless for years, but also killed nearly all of her children and left her life without meaning until very recently. All this having taken place in what is equivalently a few weeks ago in her timeframe. All that in mind, what he has done or who his father may be is meaningless in her mind and Tolbar is fortunate she hadn't roasted him on the spot upon first sensing the demon blood in his veins. In other words, he best be very careful not to be in her debt or make a deal with her.