No gots the Paret, but I may have the French book Marilyn refers to, if she can give its name and who compiled it. Or else reproduce the score, as you say.

And is the tune she wants the same actual music as that referred to by Suibhan all those years ago in Paret? It's not clear to me whether Marilyn has both books or is just going by the name. "Air" could be anything - I've seen that title appended to loads of his works, even when they have perfectly identifiable other names.