I personally don't dispute that the Son didn't know the timing of His return in Mark 13:32, nor does His Divinity rest on Him knowing absolutely everything the Father knew at the time. I'm simply telling you, the text has Him commending the woman after she corrected him, and scripture says multiple times concerning the Pharisees, "But He knew their thoughts." He knew the woman at the well's life before she even started speaking with Him. How is it not reasonable that He already knew what was in this woman's head as well?
As for Him not knowing the Gentiles would be saved, have you considered this text? He was talking to a Roman centurion here, i.e. a Gentile.
8 The centurion answered and said, “Lord, I am not worthy that You should come under my roof. But only speak a word, and my servant will be healed. 9 For I also am a man under authority, having soldiers under me. And I say to this one, ‘Go,’ and he goes; and to another, ‘Come,’ and he comes; and to my servant, ‘Do this,’ and he does it.” 10 When Jesus heard it, He marveled, and said to those who followed, “Assuredly, I say to you, I have not found such great faith, not even in Israel! 11 And I say to you that many will come from east and west, and sit down with Abraham, Isaac, and Jacob in the kingdom of heaven. 12 But the sons of the kingdom will be cast out into outer darkness. There will be weeping and gnashing of teeth.” 13 Then Jesus said to the centurion, “Go your way; and as you have believed, so let it be done for you.” And his servant was healed that same hour.
By this, Jesus was communicating to those present that many Gentiles would be entering the kingdom who had great faith just like this centurion did, but the sons of the kingdom (the Jews) who did not have faith would be cast out.