So, a thought occurs to me.
Lady Iceheart became Shiva, by allowing Shiva to enter her being and thus generating her form even though Iceheart mention's "Mother's Blessing."
Lord... I mean Midgardsormer then took away our blessing of light and gave us his instead. We have the ability to hear his thoughts, morbid though they are.
At the end of 2.55 with Minfillia able to hear Hydalyn again... would that mean she's now the vessel for Mother Hydalyn?
So... thoughts on how this may pan out come Heavensward? I'm confident Lady Iceheart will be a center antagonist again.