@Arnfred No there is nothing new in her findings. Even today over here in Iceland we are working through the sources and based on the "hints" or "remnants" in the Sagas through recent archaeological research, we are on the brink of establishing that Iceland was probably somewhat inhabited long before the actual Historical settlement was established here.
A good example of those "hints" in the Sagas is in Laxdaela Saga where Ketill Flatnose states in Chapter 2: "But Ketill said, "Into that fishing place I shall never come in my old age."". https://sagadb.org/laxdaela_saga.en
What is established is that Iceland was known to many long before it was formally settled.
One last example from Laxdaela is the reference to other sources is what is written at the end of Chapter 19 in Laxdaela Saga. Where the feud between the two families of Hrut and his former in-laws and other members of the community his former wife was from and is mentioned in the book "Brennu-Njáls-Saga". At the end of Chapter 19 in Laxdaela is written: ...."Unn left him, and thence sprang the quarrels between the men of Salmon-river-Dale and the men of Fleetlithe".
A niece of Hrutur, Hallgerdur, married over there and was never accepted in that community and her story is told in the story Brennu-Njal Saga
https://en.wikipedia.org/wiki/Nj%C3%A1ls_saga
My advice is to treat these ancient sources with an open mind, because there is always emerging new methods and reliable information to assess in a scientific and academic way the truthfulness of these sources.