What you're after won't work, sadly - the visits to Katrina's tent need to occur from local players, not remote.
If you area really game on it, you can create a new local player, go through the intro materials until you get the game saved, then visit her tent. That visit counts towards the total, even if you delete the character afterwards.
It'll take you ~10 minutes per character this way, but it's reliable and works (I did this myself).