Will Lilith do this with Diablo's skull? (Immortal spoilers)

In Diablo Immortal, We learn that Skarn used Diablo’s remains to prevent Diablo from resurrecting. In Diablo 4 we see a picture of Lilith holding Diablo’s skull. Does this mean she will use it to stop Diablo from coming back?

Well the last version of Diablo was Leah.
Lilith is secretly Leah reborn.
So her holding her former skull is simply…

Memories…misty watercolored memories…of the way…we…were…

Nope, it’s a show of force.
Lilith will try to seize the coven and all the remains of the Triune in the current time.