Levelling 11 - Rogue 9: +1 Skill point
Skill points (11): +1 Diplomacy, +1 Escape Artist, +1 UMD, +1 SM, +1 SoH, +2 Perception, +2 Swim, +2 Stealth.
If, by some chance, there is more to spend, put them in Stealth. Note, the Open Minded feat gives her an extra skill point/level.
Feat: Improved Two Weapon Fighting.
Sneak Attack goes up to +5d6, Trap Sense goes to +3