I can ruin you with two sentences.
There is a clown watching you sleep.
He isn't smiling.
I like to add to that also that when all that happen Wanda was fully possessed by the life force enity that was already in control and driving her to meltdown. That possession with what lead to the events that happened after Pietro's death and it was the Life force in the drivers set, Wanda was in the end a puppet. Same as when the phoenix turned dark and took Jean Grey to blow up the sun, but that was the will of the Enity as well.