This character uses rules from the Eberron Campaign Setting, specifically for her Dragonmark feat. However, the feat's effect is listed here, so you do not need that book to use her. Clebdecher, a famous tailor and clothing designer, is discussed in Sharn: City of Towers, where the feather fall token also appears.
As a member of a wealthy merchant house, this young woman enjoys pursuing her family's interests and looking good at the same time. But do not be belied by her decadent appearance; she is in fact a sort of social chameleon, able to drop everything and melt away into the sewers if that is what is necessary to avoid her family's many enemies, or dress up as a warrior princess to impress the local savages. With her privileged upbringing, she has had the liberty to explore her family's latent magical gifts, but she does not have the adventuring spirit. She can stay alive, but she must rely on agents to get things done.
She is lavish in her rewards and easy with her compliments, traits which endear her to her hirelings and agents. But when the going gets tough she turns cold, cool, and dangerous, and it would be unwise to presume there is anything she would not do to accomplish her goals.
Wealthy Patron (female human aristocrat 2/sorcerer 3): CR 4; Medium humanoid; HD 2d8 plus 3d4; 20 hp; Init +5; Spd 30 ft; AC 12 (16 with mage armor), touch 12, flat-footed 11; BAB +2; Grp +1; Atk +1 melee (1d4-1/19-20 masterwork dagger), +3 ranged (1d4-1/19-20 masterwork dagger); SA spells; SQ familiar; AL N; SV Fort +1, Ref +2, Will +7; Str 8, Dex 13, Con 10, Int 14, Wis 12, Cha 16.
Skills & Feats: Bluff +10, Concentration +5, Diplomacy +10 (+12 with outfit), Gather Information +8, Intimidate +8, Knowledge (arcana) +5, Knowledge (nobility & royalty) +7, Sense Motive +8, Spellcraft +5; Least Dragonmark (make whole 1/day), Improved Initiative, Negotiator.
Languages: Common, Giant, Gnome.
Sorcerer Spells Known (cast 6/6 per day): 0—acid splash, detect magic, detect poison, mending, prestidigitation; 1—charm person (DC 14), lesser electric orb, mage armor.
Possessions: ring of protection +1, scrolls of invisibility, expeditious retreat, shield, protection from evil, arcane lock and bear's endurance, feather fall token, House Cannith arcane signet ring, potion of cure moderate wounds, Clebdecher courtier’s outfit, masterwork dagger, jewelry worth 150 gp, belt pouch (20 gp, 28 pp, two sets of identification papers, one false).