Not a GM, but a player, so I can let you know how things have played out for us so far regarding the Night Swan. It's not clear how much of this is from the AP and how much of this has been our GM's invention.
We were able to foil the Night Swan's attack at the Gala when our assassin took the bolt for Count Lotheed. After tea with Madame Crabbe, The NS snuck into the Betony Estate to send us a message - namely, by stealing the stuffed head of Iron Lash, which we had mounted over the mantle as a trophy. In the process, the Night Swan encountered one of our hirelings, who she subdued (nonlethally but violently) and left traumatized. Two of our other party members were in Lotheedar, so the assassin and my PC went to the meet with her the next morning. My CG warpriest of Chaldira had heard of her whole 'rob from the rich and give to the poor' schtick, but wasn't too happy about all the murders. The LE Red Mantis in training was there to end a threat and get revenge for our hireling.
Our plan was for me to be the bait standing out in the open clearing, while the assassin tried hiding in wait. However, NS rolled a really good Perc, so the assassin's cover was blown. NS asked what our intentions were for Betony, and we told the semi-truth that we were here to better the lives of its people (My warpriest is all about community support and improvement, while the assassin only cares about the town paying enough taxes to fund the Loyalist cause). We asked what her intentions were, and she stated she intended to kill all of the nobility, starting with those in Meratt. My warpriest reiterated that he was mandated by his goddess to build community ties and improve the lot of common folk, and he had no intention of turning Betony into a tyranny. He proposed a pact of non-agression: we don't move against the Night Swan, and she doesn't move against us. She was at least willing to forgo further violence until she could meet the rest of the party in person (a LG cleric of Abadar and a CN wizard). She did apologize for attacking our hireling, and even returned the trophy the next morning.
Current party opinions:
My warpriest again likes the Robin Hood angle, but isn't ready to go full Galt on a bunch of minor nobles, some of which he has good relations with (like Crabbe and Okerra).
The Red Mantis still wants to end her as a threat, but is willing to stay their blade for now.
The Abadarian is probably not going to get along too well with the murder or thievery, but is also witholding violence until the next meet.
The wizard pretty much doesn't care either way as long as they can continue their studies.