Spoiler!
In the novel he does go to sussic and that whole spiel with the noble lady does happen but instead of getting killed by the Baltic guy she's actually therer to meet her fiance. Some ugly fat kid who she hates. She bit**** to him about Eren and Co and wraps the fiance around here finger, together they then gather around 200 Soldiers and Mercs and go to kill Eren and the Lord that Eren is pretending to serve as a mercenary for during a territory dispute war. Eren, Sol, and Isla clap that army and Eren does the whole surprise mother fuc*** by showing everyone his dragon armor and dragon. Eren wraps up the whole Prince poisoning thing by gathering evidence and then sharing it with Ian. Case closed in an abriged version. Also that bi*** as punishment ends up serving the Pendragon family as a maid directly under Eren's mother. She also eventually marries one of Eren's either retainers or close vassels don't remember which, but she dead now so
