Believe it, or don’t. You have to take it on faith.
If you accept that it is the genuine article, then it is exactly that to you.
If you disbelieve, then that is your prerogative in a free society.
However, your prerogative does not include casting aspersions on the former.
As an agnostic on the subject of the veracity of the Shroud of Turin, I don’t feel compelled to investigate it and accept that it exists.
The more one has paid for a forgery, the more one defends it in the face of all the evidence to the contrary. That goes both ways with respect to the Shroud.
There are those who have studied it and say it’s the genuine article, and others who have studied it and call if a fake.
If the article (the Shroud) clearly contradicts scripture your advice is rendered useless but I really do appreciate your very kind and mature effort to bring peace. We must put the Bible first...before the feelings, wishes and opinions of people.