This is happening on v1.0.3. I was able to find the trunk and liberate Lacey's deposit from Diamond City. But now that I have it, she's just saying generic things in my settlement when I talk to her and I can't progress the quest, though the quest marker points right to her. I've tried dropping it in front of her on the odd chance she'd respond to that, but no dice. I had another quest active, "Dog Eat Dog", at the same time in the same settlement, and was able to complete that one, if that's any help.