Gods and Mortals regardless of whether it is an ant... or a human or an elephant, aside from power and might, their existences hold a sort of resemblance.
For one, Nova knew that mortals live for feelings even whilst they hold beliefs.
While Gods merely follow their beliefs; the law that they represent and cast everything else aside..
A God of Death will produce Death and send anything that lives into their domain, nothing else matters; it is their rightful belief.
Among Gods, the concept of love is scarce and non-existent, even her own marriage held no love but the primal purpose of balance between Space and Time, the principle that kept the universe tied.
Love was something too 'small' for the likes of the prideful Gods.
That's why it was difficult for her to see a human and feel their pain with empathy just as difficult it was for a human to feel pain over an ant's hurdle.