I've decided that Sabriyya becomes a fence for all the loot the party find (mostly an OOC thing, hand me a list of stuff to sell and she turns it into gold without much muss or fuss), and that her connections afford top dollar (roll a d6, 1-5 = 1-5% price increase of resell price of list, 6 = 5% increase + any items appraised at a lower value are sold as if properly appraised)
In addition, her connections a second roll to find a specific magical item beneath the City purchase limit to purchase in Magnimar.