Why did the Chofetz Chaim have to run after the ganev to tell him he’s moichel him? He could have simply been mochel him without telling him.
On a similar note is the famous story of the guy who came to the Satmar Rebbe zt’l asking for money for his terrible situation where his wife was extremely ill facing terrible medical costs all the while he needed to marry off his two engaged children while at the same time the bank was foreclosing on his house and he owed humongous chovos to many people.
The Rebbe, not knowing who he is or having ever met him before, gave him all the money he had – an astronomical sum. As soon as the guy left with the money, the Rebbe’s Gabbai seeing that ran into the Rebbe yelling “that guy’s a lying fraudster! No one’s sick in his family; he doesn’t even own a house; his children aren’t engaged and he isn’t even poor!”
So the Rebbe jumped up “Baruch Hashem! I was so worried about him. I’m so happy to hear he isn’t suffering all those things! Let’s make a L’Chaim!”