Hum ... so this means that Skellebro rewinds don't go necessarily to the point of time where he regains conscience ( or better said, when we see him getting back to his senses ) and in this one , the point of divergence was surely far before, since Rena stats are far too diferent from the original ones ( not only in numbers, but on the skills themselves ... she didn't had originally the "Dark Trader" perk, for a example ). Now, I wonder if that happened in other rewinds or not and if Skellebro is actually waking up at the time we see him waking up ( Skellebro already did things while less than in control of his abilities once or twice , so it would not be out there that he could had woken up earlier, did stuff to help Rena , get back to the tomb and wake up again without remembering a thing ).
That said, he could had handled that reunion a little better
He probably should had dropped his knowledge of who he was dealing with in a far more detailed fashion and maybe even hinting that there could be some cooperation in getting the magic glowy liquid, since he knows damn well the Founder needs it to keep existing ( if he says he knows she is the Founder, there is no point in pretending he doesn't know about that ... ). If Rena didn't decided to keep him alive for #reasons , we would be seeing a rewind next chapter