It's a trick question. Forgiveness has no sliding scale. The Lord said, "I, the Lord, will forgive whom I will forgive, but of you it is required to forgive all men" (Doctrine and Covenants 64:10).
Recently, news accounts focused on one man who had used his own stellar reputation and influence to gain the trust of many people, and then had stolen literally billions of dollars from them. Some people lost their entire life's savings and were left destitute. All were robbed of trust and made to appear foolish.
Their reactions offered an interesting case study on the power of forgiveness. One woman said she was reduced to scavenging for food on some days. Sometimes, she collects empty soft-drink cans for the deposit. Before retiring, she was a professional with a comfortable lifestyle. Now, she has little in the way of worldly goods, and she has little desire to let go of her anger.