Era 3 is set to happen about 50-70 years after era 2 (in which marasi is in her twenties), so it could be plausible.

This settles as yes if marasi shows up in a cameo in the main timeline of era 3. A character remembering her in a flashback from years before (or her being mentioned to be alive but not actually showing up) doesn't count.

(Note: if she's explicitly mentioned to be dead in the first book I'll settle then, not wait to see if she shows up alive in some kind of twist later).