John Gill Commentary 2 Kings 8

Then spoke Elisha unto the woman (whose son he had restored
to life)
His hostess at Shunem, (2 Kings 4:8–17) the following he said to her, not after the famine in Samaria, but before it, as some circumstances show:

saying, arise, and go you and your household, and sojourn wheresoever
you can sojourn ;
with the greatest safety to her person and property, and with the least danger to her moral and religious character:

for the Lord has called for a famine, and it shall also come upon the
land seven years :
which Jarchi says was the famine that was in the days of Joel; it was, undoubtedly, on account of the idolatry of Israel, and was double the time of that in the days of Elijah.

And the woman arose, and did after the saying of the man of
God
Whose words she had reason to believe; she having a son given to her according to his word, and this restored to life, when dead, through his intercession:

and she went with her household, and sojourned in the land of the
Philistines ;
which was not far from her native place, and where there was plenty of food, and she could have as free an exercise of her religion as in the idolatrous kingdom of Israel.

And it came to pass, at the seven years end, that the woman
returned out of the land of the Philistines
Either hearing that the famine was over, or believing that it was, the time being expired the prophet fixedfor it.

and she went forth to cry unto the king for her house, and for her
land ;
which her nearest relations in her absence had seized upon, as heirs to them; or those in whose hands she hadintrusted them refused, upon her return, to deliver them to her; or the king's officers had seized upon themfor him, as forfeited to the crown by her going out of the land without leave; and now she needed a friend tospeak for her to the king, which, in time past, she had no occasion for, and thought she never should, see (2 Kings 4:13).

And the king talked with Gehazi the servant of the man of God ,
&c.] Elisha's servant, just at the same time the woman made her application to him; so that this was before he was dismissed from the service of the prophet, and consequently before the affair of Naaman's cure, and so before the siege of Samaria:

saying, tell me, I pray you, all the great things that Elisha has
done ;
the miracles he wrought, as the dividing of the waters of Jordan, and healing those near Jericho; the affair of procuring water for the armies of the three kings in Edom he needed not to relate, since Jehoram was an eyewitness thereof; the next was the multiplying the widow's cruse of oil, when he in course came to those that were done for the Shunammite woman.

And it came to pass, as he was telling the king how he had
restored a dead body to life
Which was the Shunammite's son:

that, behold, the woman whose son he had restored to life cried to the
king for her house, and for her land ;
came and presented her petition to the king at that very instant:

and Gehazi said, my lord, O king, this is the woman, and this is her
son, whom Elisha restored to life ;
the very person I am speaking of.