Also this wasn't in secret empire #0 but in the prelude to the zero issue of Steve Rogers #16 spoiler warning!!!
But it showed Maria hill finding out the truth and then being ambushed by hydra agents then she contacts Rick jones while the hydra goons chase her but he ultimately sides with Steve when Steve contacts him in the middle of the conflict and while we see Maria being trapped by hydra goons who block her pathway but we're not shown any wounds to her or shown her being killed? So does this mean she managed to escape with help? Or she was captured? Or killed off screen? Oh please let it not be a off panel death that would be such a disappointment.