After re-reading the background, I decided human made more sense. Since dwarves are rare and we already have one. At your leisure, enter "Tiqui" Hamosa, level 6 human rogue.
She's not the type who would go into a military outpost voluntarily...
[sblock=Ratiqui "Tiqui" Hamosa]
====== Created Using Wizards of the Coast D&D Character Builder ======
Ratiqui "Tiqui" Hamosa, level 6
Human, Rogue
Build: Trickster Rogue
Rogue Tactics: Artful Dodger
Rogue: Rogue Weapon Talent
FINAL ABILITY SCORES
Str 8, Con 13, Dex 20, Int 10, Wis 10, Cha 16.
STARTING ABILITY SCORES
Str 8, Con 13, Dex 17, Int 10, Wis 10, Cha 15.
AC: 21 Fort: 16 Reflex: 22 Will: 18
HP: 50 Surges: 7 Surge Value: 12
TRAINED SKILLS
Athletics +7, Stealth +13, Thievery +13, Acrobatics +14, Streetwise +11, Perception +8, Bluff +11
UNTRAINED SKILLS
Arcana +3, Diplomacy +6, Dungeoneering +3, Endurance +4, Heal +3, History +3, Insight +3, Intimidate +6, Nature +3, Religion +3
FEATS
Human: Action Surge (PH) +3 to attack rolls during any action you gain by spending an action point.
Level 1: Backstabber (PH) sneak attack damage increased to d8's
Level 2: Two-Weapon Fighting (PH) +1 damage when using melee weapon in each hand.
Level 4: Melee Training (Dexterity): (PH2)
Level 6: Cunning Stalker (HotFK) You gain combat advantage against enemies that have no creatures adjacent to them other than you.
POWERS
Rogue at-will 1: Clever Strike
Rogue at-will 1: Sly Flourish
Rogue encounter 1: Acrobat's Blade Trick
Rogue daily 1: Spinning Blade Leap
Rogue utility 2: Adaptable Flanker
Rogue encounter 3: Jumping Blade Assault
Rogue daily 5: Bloodbath
Rogue utility 6: Perfect Feint
ITEMS
lvl 10 item: Footpad's Friend Dagger +2
lvl 6 item: Iron Armbands of Power (heroic tier)
lvl 5 item: Amulet of Life +1
1000gp start: Magic Leather Armor +1, Acrobat Boots (heroic tier), Dagger (5), Backpack (empty), Disguise Kit, Glass Cutter, Sunrod (4), Thieves' Tools, Trail Rations (10)
====== Copy to Clipboard and Press the Import Button on the Summary Tab ======
[/sblock]
History to come shortly, have to go to work...
Old character builder file
View attachment Ratiqui _Tiqui_ Hamosa.dnd4e