Atma
Atmais a Diablo II NPC, and is an NPC found in Lut Gholein, in the tavern on the eastern side of town, just up the path from the town portal spot. She is not a merchant and does not buy or sell anything, though she can heal characters and their minions, as can Fara. The fact that Atma is slightly closer to the town portal area makes her potentially useful, if you are running to heal a badly-poisoned merc. She periodically bursts into tears and cries hysterically for a few seconds, presumably over her husband and son. She recovers quickly, strangely enough, and wipes her face with her sleeve.
Atma gives the Radament's Lair quest to start off Act Two, but it's not necessary to speak with her before or during the quest. For this quest the character is rewarded with lower prices in town, but speaking with Atma is not required to obtain this reward.
