Jean is building a life outside the mansion while remaining one of the people the X-Men rely on most.
Her college attendance gives the late original-team stories a different rhythm from the founding days. She can come back for a weekend, rejoin the others and immediately find herself inside another emergency. Leaving the school grounds has not made her stop being Marvel Girl, and the book has to allow for both parts of her life.
By X-Men #49, her telepathy has become vital to keeping the group connected. Warren discovers trouble at the old headquarters and reaches out; Jean links the scattered teammates together. The X-Men can be in different places, doing different things, and still become a team again because she can reach them.
That is a useful change in what her presence means. Telekinesis gives her a direct hand in a fight. Telepathy also makes her part of the group's communication and decision-making. Information can move through Jean before anybody has physically assembled in one room.
There is a harsher side to that responsibility. The explanation in #65 reveals that she knew Xavier was alive while her friends believed they had buried him. He required her silence. She has been carrying information that separates her from the people closest to her, even when they think they are sharing the same loss.
Jean also supplies the individual costumes unveiled in #39. It's a lighter scene, but the idea fits her place in this period: she knows the people inside the matching uniforms well enough to imagine each of them looking different.
Her role is expanding in several directions at once. College student, psychic contact, trusted teammate and keeper of an awful secret all coexist here. None of those needs to be replaced by a later version of Jean for this one to matter.
Jean is building a life outside the mansion while remaining one of the people the X-Men rely on most.
· Comics / Marvel / X-Men