Why is God obligated to help someone who rejects him?, Part 2

In reference to God's goodness in the face of hurricanes Harvey, Irma and Jose, a Christian asked me this question:

Q: "Why is God obligated to help someone who rejects Him?"

Dr. Abby Hafer responds, author of The Not-So-Intelligent Designer:
The same reason a parent is obliged to help her children, even when they reject her. Parents bring their children into the world. According to this person's world view, God brought humans (and animals, and plants) into the world. Human parents have this very obligation toward their children--to keep helping them, even when they reject you. And by and large, parents do this. So--is God actually *less* moral, dutiful, strong and self-controlled than your average mother?