The best I can do on those is “because I said so.” That doesn’t always satisfy her, or me, but we both have to live with it. Someone has to watch out for her, I’m the parent, so it’s up to me. We’ll both be happier when she is able to understand.
There’s no doubt a similar dynamic between God and us. We’re simply incapable of understanding some things that must be painfully obvious to Him. They’re beyond our grasp, even though they reach into the deepest parts of our lives. We too have to be satisfied with a divine, and sometimes silent, “because I said so.”
(Other images comparing our relationship with God with our relationship to our children can be found at What We Can Learn About God From Being Parents.