Lockania

The Marketplace
If you try to talk to her, she will reply:
 * Lockania: You there... yes... yes, I believe your blood might be pure enough for a Dragonmark.
 * Lockania: The bloodlines of the great houses may manifest Dragonmarks of great power. If you prove your knowledge of Dragonmarks, I will determine if you are one of the chosen.
 * Lockania: Step into the Hall of the Mark,, and allow me to explore your destiny.
 * You: I will meet you at the Hall of the Mark and prove my knowledge of dragonmarks. (Bestow quest)
 * You: What is a Dragonmark?
 * Lockania: Some believe that Dragonmarks are simply tattoos, but do not be fooled by such ignorance.
 * Lockania: They are symbolic expressions of the great Prophecy, and they manifest through bloodlines of the lesser races... human, dwarves, elves, and such.
 * Lockania: If you have explored much of Stormreach, you will have seen the great House Enclaves: Phiarlan, Deneith, Jorasco, Kundarak... the great houses' power comes from the magic of their dragonmarks.

Talking to her after acquiring the quest, but before completion, will make she say:
 * Lockania: I cannot read your bloodline out here . See me within the Hall of the Mark.
 * You: I will meet you at the Hall of the Mark and prove my knowledge of dragonmarks.

After completing the quest, if you talk to her again, she will reply:
 * Lockania: Have you spoken with Fred in House Jorasco yet?
 * Lockania: He has the ability to help you manifest hidden abilities in your bloodline.

Hall of the Mark
See the quest article.