glad i am not the only one bothered by that TT. Had to come up with an imaginary ending for her, coz it distracted me in my lecture (excuse). But i came up with this:
With no more pandora providing her with corpses to grow her flowers aka those human relics, she just ended up leaving the garden, to the outside world. She did state she is interested in the outside world. After that she builds her own plant boat to cross the ocean but a storm came upon her in the middle of the trip and she sank. As she didnt die coz she was a relic but also cudnt swim only her aura in the ocean remained. Her aura created an island though, that is known today as australia. Due to her wickedness side, this new island started to harbor lots of dangerous animals. But the humans adapted well and just consider them as a food option.
Lol this is a good theory (≧∀≦)
Gaia was never found, no?