RSVP: The Countess

Half a million comments explaining how to do a difficulty -1/10 quest, not a single person explaining how to even get to the countess in the first place, smh...

Mirror portal in the small building/manor just below and eastwards of the main blocked entrance.~ 59 ; 30

If you're like me and coming back to finish your Ember Court rep after ages, but for some reason The Countess is either gone or won't talk to you/doesn't have an RSVP quest, check to make sure you've completed up to here on the campaign quests at least: An estate within the old gate.

Also note that Bogdan (turn in for the quest) may not be where it is indicating him on the map (Deathstrider was right about him being at /way 58.85, 29.93).

/way 53.30 40.00 Start
/way 54.09 39.63
/way 54.83 40.29
/way 55.45 39.16
/way 56.07 37.33
/way 57.41 36.77
/way 58.56 34.77
/way 59.61 35.01
/way 61.26 37.08
/way 62.16 37.19
/way 63.72 35.65
/way 63.64 34.77 Finish

Those points will form a trail that you can follow, when you're on Balthazar.
Three zoom-in clicks on the minimap, from fully zoomed-out, and you'll see those points spaced out in an easy-to-follow pattern.
Don't worry about hitting the green dots. What matters is the "Losing Control" bar.
Follow that path and you'll automatically drop Balthazar off at the end, with time to spare.

😎