I find it odd, for example, when I hear in the news that a parent forgives someone who intentionally caused severe injuries to their child. It seems to me that only the child has the right to forgive in such a situation.
Addendum: Let me also add for consideration the more extreme case of the parent or spouse of a murder victim forgiving the murderer. Although the state may have the right to pardon the perpetrator at some point, that is different from forgiveness, and it seems to me that no one has the right to forgive the perpetrator for the murder itself. To suggest otherwise would be tantamount to regarding the victim as property of which one has been deprived. It would be tantamount to forgiving someone for stealing and totalling your car.