Kinda disgusting that it's framed as if her happiness is conditioned by this one random guy.
EDIT: ...Right, Josei. Derp. That makes sense. Anyway, the idea is nice, albeit seems odd. Even if "weak", her overall magic potential seems to be leaps and bounds above average. Surely she can do anything other than adventuring, especially with an influential guildmaster at her back. But I guess the author really wanted a tragic isekai super maid to be dokidoki with the princes.