User blog comment:B214/Shin DxD 1 discussion/@comment-95.210.189.106-20180804111852/@comment-95.210.189.106-20180805055435

Yes she could joining, bust most probably before this Issei wants that she make a bit of practice with his longinus and demoniac power, and like queen because there is the possibility thath she migth hurt, or that is power could causes damage that would do see like a danger by both gods and underworld's politacals.