Some fan fiction have addressed it but I don't recall any taking it to this depth, especially Lois keeping the photo of when she began to notice the difference between her and Clark's appearance and certainly not the detail of the thought process that she and Clark went through to get to this point. In most that I remember she ends up just shrugging it off or her aging is delayed by the Kryptonian Aura that surrounds Clark. I am actually surprised that Clark was not there with her unless she was doing this without his exact knowledge. I mean she is doing this expressly to help keep his secret identity safe but maybe they thought it might just draw even more attention to the looks difference so he stayed at home.
By your timeline Lois would have been probably pushing 50 at this time so she would have begun showing her age somewhat by then. I can see that since tell really can't 'age' Clark that they would have to make this decision
Mike
