Sunny Smiles

 is a local ranger living in the Mojave Wasteland in the town of Goodsprings in 2281. She is often tasked with killing bothersome Geckos that annoy the water wells.

Background
She owns a dog named Cheyenne.

Quests

 * Back in the Saddle: Sunny Smiles gives the Courier a varmint rifle and helps teach the Courier how to survive better in the Mojave Wasteland while the Courier can assist her in taking out Geckos.
 * By A Campfire On The Trail: Sunny shows the Courier how to make items on campfires, a Healing powder in this quest.
 * Ghost Town Firefight: She can help the Courier defeat the Powder Gangers.

Other interactions
It is possible for Cheyenne to die during the tutorial quest, in which case Sunny's dialogue will change slightly to show her remorse. It does not, however, have any real impact on the completion of the quest.

She also gives the player bobby pins, and a copy of Locksmith's Reader if the Courier asks her about work.

It is also possible for her to die when fighting the Geckos when your on the quest with her ( I wandered off and went back to find her body on the ground next to Cheyenne) This also prevents saving the town in "Ghost Town Gunfight" as far as I know it.
 * confirmed*

Notable quotes

 * (To Cheyenne) "Down Girl! (To Courier) Don't worry, she won't bite, unless I tell her to."

Appearances
appears in Fallout: New Vegas.