In the second stanza, the author describes the people present at the deathbed. They are also quiet, exhausted from their watch and preparing now for the final loss.
"The eyes beside had wrung them dry,
And breaths were gathering sure
For that last onset, when the king
Be witnessed in his power."
She uses one literary device called synecdoche, meaning a part of something refers to the whole. In this case, when the author talks about "the eyes", she means the mourners, the people next to her deathbed crying. She also uses comparison as she compares the eyes to the clouds in a storm, asking us readers to imagine each mourner as having a storm of grief in themselves.