There may have been an oral tradition as well as a written tradition. An Iliad from the point of view of the Trojans would be fascinating.
Note that she mentions Kloekhorst’s paper on the possibility of Wilusa speaking a Tyrsenian/pre-Etruscan language...
The Aeneas legend is super old in Italy and may well pre-date the spread of the Homeric story.
So that may indeed be preserving the “point of view of the other side”.