Again, what would be the point if Sean was exempt from fulfilling his end had she testified if the oath is as you say? It would have been null and void at best or worse, cause either guy to die because she fudged the spell against what the two men agree to. She might be thrilled with Sean dying but she'd never risk Nick. Making the deal with herself = neither guy is bound, so no deal and if that was the case why did we have to watch her worrying about getting to court after Hank called if she knew the oath was invalid between the two, since they aren't the ones bound and therefore not suffer the death promised in the spell, which is what your post implies.
And blood curses on the show aren't the same. The show has never said there's one way to uses hexenbiest blood be it in uses or contract signing or blood oaths.
And blood curses on the show aren't the same. The show has never said there's one way to uses hexenbiest blood be it in uses or contract signing or blood oaths.