Much put-upon, Hanne was the Norwegian girlfriend of Danny in the Join Me book. She is contantly seen as a party pooper and Danny has to hide his Joinees and Join Me from her in case she tries to make him stop it.
Once Join Me had been going for a while and Danny had quite a few joinees, he set about going to meets. It was while out at a joinee meet that he forgot to lock his drawer and Hanne happend to discover his vast collection of passport photos. She then sent him a text stating "You sad Wan***".
Hanne also pops up in Yes Man