no visible changes in her , but again it is the child that concerns me ... . with regular infusions of demonic ichor such as i have been giving her , the child may be capable of any feats ... . last night i heard the child 's heart beat , more strongly than any human heart , the sound like a mighty bell , tolling the beginning of a new generation of shadowhunters , the blood of angels and demons mixed to produce powers beyond any previously imagined possible ... . no longer will the power of downworlders be the greatest on this earth ... . ' `` there was more , much more .