When he heard Delphina's tender voice he didn't know what to say. She was good friends with Paige and Maia as well as knew about others like Iblis and Adele. If he tried to console her, it could be taken in a wrong sense.
At most they were in a partnership or were on friendly terms. It wouldn't be excessive to say that he wanted to help her. In fact, at this time she couldn't do much, although her talent and brain were superior to her older brother, her father had final say in everything.
He was adamant to making his son the next heir of the Group. Still, Delphina had the upper hand at the moment. However, none of it matter when intervention of foreign capital was introduced. The unknown family seemed to put her on edge. It could be said that their backing was no less than him.