Hey Mr GM, just a thought that crossed my mind, but would Marion be able to be a free-willed necromancer instead of warlock? Same character/background, but instead of 'lured by Demonology', they were someone who fell during the Scourge, was at Scholomance, but through means got their free will back and so fled to Kalimdor? They still have the same plans as outlined above. (acquire a bit of the marsh, drain it, make a farm/plantation estate etc) If you want an alignment they'd be Lawful Neutral.

Or are Necros too taboo for even lawless Dustwallow to tolerate?