Durova is restoring some Arab caligraphy. It is part of her ongoing effort of restoring diverse and interesting material. What I admire in her effort is the amount of effort invested in restoring material about all kinds of subjects from all kinds of places.
diacritic is to be found on the top line. We have asked a few people, one person insisted that several diacritics were to be changed and another was not sure what needs to be there..
Maybe you can provide Durova with the right information..