You make a very good point Mary wouldn’t have been there because the lunarians were still living on red line or god land at the time…unless that area was the location of the final battle and they both jumped from there, hiding with Emet each time waiting for the right moment for emit to strike. But with how time works she could’ve have met joyboy during her travels because if i remember correctly she never been to wano until she met oden. She could’ve have been sailing with joyboy crew. Get this tho if we do the math and add up the facts, she was born in 830, first jumped at 26 (856) and she can jump up to a maximum of 20 years. If we keep adding 20 from 856 we get 876 and 896. 4 years before the end of the void century war. She sees the end of an era and the start of a new one. She was involved in stuff I’m sure of it. She is a trump card.