Jamieson, Fausset and Brown on 2 Kings 4:26-28

26-28. And she answered, It is well--Her answer was purposely brief and vague to Gehazi, for she reserved a full disclosure of her loss for the ear of the prophet himself. She had met Gehazi at the foot of the hill, and she stopped not in her ascent till she had disburdened her heavy-laden spirit at Elisha's feet. The violent paroxysm of grief into which she fell on approaching him, appeared to Gehazi an act of disrespect to his master; he was preparing to remove her when the prophet's observant eye perceived that she was overwhelmed with some unknown cause of distress. How great is a mother's love! how wondrous are the works of Providence! The Shunammite had not sought a son from the prophet--her child was, in every respect, the free gift of God. Was she then allowed to rejoice in the possession for a little, only to be pierced with sorrow by seeing the corpse of the cherished boy? Perish, doubt and unbelief! This event happened that "the works of God should be made manifest" in His prophet, "and for the glory of God."