I really like this premise. I've never seen this sort of take on Clark's absence.

I'm inclined to suggest that you to stick with Lois's perspective and follow her as she figures out what happened. I think you need to decide whether you want the reader to know stuff that Lois doesn't know. You could do flashbacks to Clark's perspective as she finds stuff out, but I think that would depend on how detailed you want to be.

I look forward to future chapters! smile

"It is a remarkable dichotomy. In many ways, Clark is the most human of us all. Then...he shoots fire from the skies, and it is difficult not to think of him as a god. And how fortunate we all are that it does not occur to him." -Batman (in Superman/Batman #3 by Jeph Loeb)