If Mary will die at age 130, where was she at the events of Splatoon 1? When Captain Cuttlefish got squidnap over, and over again by Dj Octavio? If my memory is right, Captain was 128 at Splat 1. So it means she died between the events of Splatoon 1 and Splatoon 2? How was her relationship with the squid sisters? Did she ever met Agent 3 or knew about what happen at OctoValley?
(Sorry for the whole timelines thing question lol)
(130 isn't an exact number- the general consensus from her creator is that she dies before splat 1, so it's more likely she hits 100 and peaces out. A very long and fulfilling loving life. But she loved her granddaughters very much, and we toy with the idea she's the one who taught them to sing. But no, she never met 3 or 4. Tav wouldn't have DARED touch her husband while she was alive after she whooped his ass inside out during the turf war)