I'm not talking about simply "not remembering". Im talking about making it not have happened at all in the first place. Is that impossible? How do we know? We are creatures that live inside time and space. If God can make suffering in the past (from our perspective) non-existent, then maybe the question "why does God allow suffering", misunderstands the nature of reality in a fundamental way we cannot grasp.
I don't know if that's a viable solution. Probably it is not. But what I am saying is that the universe and reality are stranger than we can imagine. And for us to say we "know what is good" and we "know how God would need to act in order to be good" just seems presumptuous.