Glad to see this thread developing I decided to awaken my Betty after my Aria was done and leveled back up a bit and have been seeing how well she can farm gold.

I've been doing Return to Ruins 23 Chr for 1500k Base + roughly an extra 1500 from Gold Get. Was using the lvl 14 drops to level up units instead of selling. Works OK once Betty is leveled up enough to 2 shot red goblins (about lv50 with Aria's +2% and Prince bonus)