She had a clause in her contract that Byåsen would strengthen the team with three named players. Anna Bjørke Kallestad, Rita Lakatos and Ingvild Bakkerud. Bakkerud ended up in Odense, I guess that's why she chose to break her side of the deal.
At the same time they loose Högdal, Jacobsen, Grøtan (most likely), Yttereng. Perhaps Venn will leave as well, depending on where she will study. Storhamar has been mentioned to be in dialogue with her. I guess all these profiles leaving is the tipping point of her decision. Not Bakkerud not coming.
On another note, Maria Hjertner left Byåsen as she was third choice behind Högdal and Waade... A year later... Sad for Byåsen. However, they will do what they always do, be second best and develop amazing talents!