Donna Couldn't Forgive

At age 16, Donna was the only girl in a family of three siblings who had a normal childhood. One day while eating dinner, her brothers and father referenced a joke from a then popular television show that she found to be offensive unbeknownst to her brothers/dad. Its been 30 years since Donna has spoken with anyone who sat at that table including her mom. I sat down with Donna and asked if she was willing to reconcile and she said why? Donna has been married 7 times and continues to struggle with relationships and health. I spoke with Donna about my experiences and the loss of siblings and she responded that was me..........What role would forgiveness play in Donna's life?