With this in mind, why is it unloving for God to send people-
It would be unloving of God to let sinful man go free from their transgressions against Him. "For all have sinned and fall short of the glory of God". Romans 3:23
God poured out His wrath on Christ to be a substitute in the place of those who believe and repent of their sin.
Because God is loving He must punish those who have transgressed against Him, which includes those who have transgressed against His children.
If these people repent of their wickedness and turn to Christ they will be saved.
The reason why these people will be let go if they turn to Christ and repent is because Christ bore God's wrath for them.
This is love, that Christ would willingly lay down His life to rescue sinners.