Responses
I think they're in their early thirties???? So she was still a young adult by then I think, or at least a teen, but the disciples wouldn't have known anyway since she never revealed herself: age, face, body, etc also the ML already went through a failed marriage, fathered an 8 yr old (? I forget) child, and so on.
How long has she been grand mage? It seems she went into seclusion for 6 years into the tower. Was she always there? How much older is she than the green hair disciple? I don't get how the timeline adds up tbh