Initiate Dresden once appreciated the last... effective leader of the chapter, Owyn Lyons. Believing that he had good points about the Brotherhood helping people, however once she go her assignment aboard the Prydwen this perception was shattered. On the flight to the Commonwealth, they passed city after city. Ruins, buildings taller than any she had ever seen. Some that nearly clipped the airship, and some used by mutants. Seeing all that destruction, tens of millions dead, brought on – in the Brotherhood's beliefs – by technology run amok, it made it clear to her. Elder Arthur Maxson is right. The wasteland needs to be cleansed. And they are the ones to do it.
Dresden is mentioned only in Fallout 4.