Far Shiverpeaks
Soloing Brie as mesmer
Not sure on the just kill her method, but there’s always the option of backing out and clearing the waves of adds and defend the console. The Deployable Mortar helps a lot here,drop it at the edge where the adds come and it’ll pop the big guys and keep the grubs there and they hold the technicians. Clear out all the risen that come in who can’t hurt you with the Brie buff. Then once they stop coming you go and finish Brie off at your leisure.
you can always just spawn portal and return to her when you’re kicked out. (you need to tp to reza wp after being kicked otherwise it will be too far)
Some good replies in this thread to the same question:
https://forum-en.gw2archive.eu/forum/game/dungeons/Mesmer-Arah-p2-solo/first#post5146730