OOC: It's supposed to be a more interesting fight because of Dura and her abilities, plus, if you were fighting it as a party, you'd be churning out more damage. In-context - and given the enemies supposed to come after have been defeated - you could simply escape past/beneath it into the library room. Of course, that would mean leaving Dura to its tender mercies... attempting to rescue her would mean either killing the squid (again), or perhaps someone could slip down its soft throat to retrieve her. Or maybe you just don't care what her fate ends up being...