I found this in the meantime:
http://www.albanianliterature.net/oral_lit2/OL2-04.html
It seems that there are several variants of this legend, with the somewhat different names of Dhoqina, Doruntina, Garantina and Fjoruntina for the woman.
Maybe all these names are alterations of the one original (and now lost) name used in the first version of the legend.