Laughing off grudges?
No, not at all.
It's just that Link indeed did not want to make enemies everywhere. If he could avoid trouble, he would do so.
If Mina Havcheck truly meant what she said, and would no longer target him in the future, how would it harm Link to let her off?
In the end, she was just a young girl who had not yet reached maturity.
Furthermore, she was a pitiful person who had been harmed before.
The reason why she acted so obsessively, might be due to her own character, but it was most likely a result of the violations she had previously suffered.
Link was not a saint who pitied everyone, nor was he the type of person who would seek revenge for the smallest grievance, and even less so a cold-blooded killer who would casually take others' lives.
He only hoped that their paths would no longer cross in the future, that they would have no more disputes.
As for Harold Andrews, Link could not definitively ascertain why he had acted against him.