Seras was feeling that brief weakness from teleporting them although she had also needed to shatter wards so that they could. One last magic use and that was to break whatever spell was on Azazel, then she was reigning her magic in.
Asya killed the demon easily enough and just sat kn the ground in the dark. All around her were dead people.... innocents. God she was grateful her mistress hadn't seen this. Tears actually fell down her cheeks and she actually screamed her outrage, her resurrection magic lashing out. It only targeted those who were purely innocent. Children, infants, and what not. Reviving them, sending them to the mansion for now. After that she allowed herself to drop through a portal, allowing the bracelet to guide her for the time being.
"Mistress there are kids appearing out of nowhere!" Belial called out and Seras was giving a nod. She had felt the magic.