There is little doubt that she is with him initially because they had a genuine connection. He was a dirt poor Jew living in New York in some shitty apartment with her before he struck it big.I don't think Hila's trashy enough to have children just to get money. I think she's with him because of the H3 money and the reach it gives the Teddy Fresh brand. Maybe also cause she can't be bothered starting a life all over again with someone else.
Now she is with him for the money and whatever love they had has long since dried out.