I can't get any of the Starks in the stockades, I'm not sure if you need to make certain choices for that.
But I've gotten everyone except Danny and Cerssi to 5 stars (Apparently Marghery and the red woman start with 1 heart whilst the other two start with half a heart?).
Solid game, getting influence was too grindy though and by the time I had influence I had more gold than I would ever need.
Also, fun glitch: if you get to 5000 influence, and then start a new game (overwriting the old save in the process) the progress bar at the top still says 'start war' and if you click it then you automatically pay off your 5000 gold debt (which puts you down to -4900 gold)... but you keep all of your influence from your last run (5215 in my case), and Ana keeps all of the items she has equipped but they don't show up in the inventory.