I read the article and have mixed feelings about it. On one hand, I share the reaction against the positive thinking, prosperity "Gospel." But on the other hand, her project seems like mere reaction, like giving theological permission to wallow in the negative. For example, she references her first book, "Everything Happens for a Reason, and Other Lies I've Loved." Now, it is true that as sometimes pastorally applied, the idea that everything happens for a reason might ring hollow in many cases. But is it a lie? Are we instead to say of our suffering that it is meaningless, random and just sucks? It seems to me actual Christianity sanctifies suffering and the way of the cross precisely by imbuing it with meaning. When we cannot see the reason, faith rests on the assurance that God is not random or chaotic, and therefore I don't need to see the reason. I simply need to trust Him. As I see it, that is a much different message than the one Bowler seems to emphasize, at least as far as I can tell from the article.
I have a slightly different perspective on bad things happening. I relate it to the concept of God's active and passive will. This may be heretical, but I do not believe that God is in complete control of the universe, by choice. When God decided to create persons who had free will He chose to allow those persons to choose contrary to what God wanted. They could frustrate God and sabotage what God wanted. The possibility that events would not play out exactly the way that God wanted was implicit in God's choice to allow free will. If people always had to choose what God wanted them to choose, it wouldn't be free will.
Thus I believe that God has allowed people to do and cause events and situations contrary to what God would want. I also believe that God has allowed a certain amount of randomness to enter into the world. Sometimes things just happen. In part I attribute this randomness to the corruption of nature that was one result of the Fall. Nature itself was bound to corruption by our Fall. The entire hydrological cycle whereby water evaporates from the sea (and other bodies of water), enters the atmosphere, and precipitates out as rain, thus watering the land has become not a smooth, gentle process whereby the land is evenly watered to a chaotic process in which some land is left dry and barren and other inundated and flooded, and rain is not always a gentle watering but also stormy and destructive.
Through it all, God at times takes direct control so that some events that He decides upon will happen no matter what people decide (the birth of Jesus in Bethlehem, for example). When God decides to take action nothing will stop Him. And God can even take the contrary decisions of people or even random events and weave them into His plans. God may not have wanted bad things to happen, but He can still make good come out of them.
I do not see the Bible telling us that God has promised that bad things are not going to happen, that the world will not at times be random or chaotic. Contrary to prosperity gospel teaching, God does not promise us an easy life. We are sinners living in a sinful world where bad things happen. And bad things are going to happen to people who don't deserve it. What God has assured us is the ultimately, He is in control and will used the bad things of this world ultimately for our good.
Everything happen for a reason? Perhaps, but we are simply not guaranteed that we will always understand that reason. And sin entering into the world messed things up.