Eret has a strong interest in fighting and money, to the point that those govern many of her major decisions (for instance, taking the bounty on Owen without reading the instructions because the price was so high and only initially feeling bad because they were caught, or taking Golden Beard's treasure despite the likely curse because of the rewards). However, while fighting is an interest of Eret's, the obsession with money may lean more towards just being due to their worries.