I've had this happen on 2 characters now. I light the last fire with between 10-15 secs left on the clock, I jump down and talk to her but I don't get the achievement. The timer disappears when I light the last fire, I definitely haven't failed them as there was still time left when the last fire was lit. And yet, no achievement.
Is this a possible bug?
The lockpicking achievement works. The timer disappears when I open the last chest, I've gotten the achievement. But this one, won't register.
PC NA - EPHS