I haven't read the book yet, I'm just guessing.
But isn't "Scott" the word Jean says or scream every time she get resurrected or killed?

X-Men 101 just when she's about to die in the flame she screams .... "Scott"

X-Men 137 when she commited suicide ... "Scott"

In the book "Phoenix rising" at the end of the first issue, after the Avengers took the cocoon to the lab, she whispers... "Scott"

When Maddie came to life she screams ... "Scott"

So, why not, maybe it's the same in this issue, I would really like it.