Looks like the event outside doesn’t matter. I was able to trigger them to follow multiple times to confirm.
As others said, you are looking for gates to not have a health bar (cant attack) after talking to her.
I think it has to do with getting within ‘visibility’ range to the gate before talking to NPC.
Try:
- Enter.
- Don’t walk directly towards cliff edge (where you climb down). Walk away from gate and hug bottom edge of cliff until you get to climb down.
- Hug right wall until you can click on NPC.
- Run towards gate. If there is a health bar, exit dungeon, exit game, start game repeat.
P.S. was in Tier 1 (if that matters)