How can she forgive her son for (alleged) abuse of a third party??
Forgiveness is only appropriate between the actual parties to the offence. Something social media tend to forget.
Needless to say I haven't followed this closely, but there doesn't seem to have been any repentance on the part of prince Andrew. No unconditional admission of wrong-doing, avoiding the use of words such as 'inappropriate' - very common in cases of abuse where words like adultery would be more accurate. No accompanying desire to put things right.
Financial settlements obscure this all the more, as you don't know if this is a genuine attempt to compensate for acknowledged wrong-doing or a means of buying your way out of embarrassing court revelations.
No one knows the whole truth about this shameful episode other than Andrew, Guiffre and Maxwell and none of them have given any evidence in a court of law about it, or are likely to now...
A not unimportant point. There seems to be a lot of assuming as to what went on. As we don't know for certain this undercuts criticism of the Queen for allowing Andrew to help her into the service. That said, I must admit it seemed a strange thing to do in the circumstances.
Monarchist or not, I do feel sorry for the Queen so late in life. She has been badly let down in her life by Charles, Andrew and Harry.