"Our Lord does not forbid people to pursue their own self-interest in the course of serving Him. He commands it, in fact. There is sometimes a difference between pursuing Asmodeus's interests and following His will for mortals; Asmodeus might give Sevar less, if she compacted after selling her soul rather than before, and that would work to Asmodeus's interests and not hers. But in so doing, she would be less the kind of mortal and devil He seeks to have serve Him. He bid Sevar come to Him in Hell without thought of other choices; He did not bid her to seek nothing in exchange, else she could not compact with Dispater at all."
"That said, you will require further practice and reminders in noticing when, in acting from friendship, you do act contrary to our Lord's will for mortals."