It is the duty of any queen to care for each and every one of her subjects. Likewise, if Her Benevolence is to become a wise and compassionate ruler, she will concern herself with all of her companions equally.

[He has no idea what she's implying by 'someone like me', not knowing Komaru or her low opinion of herself very well, but he's sure that's what Rayfa would think.]

Consider it from the perspective of a mutually beneficial relationship. She has had more than enough people to be of service to her, so it will help her more if she is able to be of help to you.