Rani purchasing the following:

Potion of Darkvision (x2) - 600

Potion of Levitate (x2) - 600

Potion of Fly - 750

Belt of Incredible Dexterity (+2) - 4000gp

Upgrade Amulet of Natural Armour to +2 - 6000gp

Spending 11950gp

Done!