The knowledge of an Origin God sleeping right before them made these two fellows almost lose their minds. It should not be possible for an Origin God to exist in their realm in any way. All of them were in heaven, stabilizing the universe with Origin Energy.
Not counting the fact that she looked young, when all the Origin Gods were as old as the universe itself. Of course, one at her level of power could alter their looks, but what were the chances that a Supreme Goddess of Origin would choose the form of a 4 year old toddler?
Draco and Qiong Qi were more likely to believe that she was born in their world naturally, as had all the former Origin Gods. The problem with this was that according to Vadoma - and even Qiong Qi himself knew this - Origin Energy was scarce in the universe.