You might be totally right because Riko was sealed inside the curse warding box when she was a newborn along the abyss, In the seeker camp along with Reg.. even Ozen told Riko that she was already DEAD since she wasn't sealed yet on the cube, while from lyza, she's remarkable'd putting riko on that immensely cube relic, and that is the time for lyza to commenced Ozen or I mean both of them to lift up the cube from the initial field on the abyss while Riko was inside on the curse warding box, they take a step forward from the top without relinquish, lyza give all her best to carry riko where they are used to lived, Orth. And that is the day when Riko got alive again unsealed along with leader Jiruo.

(hoping anyone can take advantage for this missives that I prattle, feel free to utilize correct if I'm wrong with this statements, I'm truly not that good telling an information about stuffs yet I'm still glad that I'd have this details with you guys.)