Help

I'm looking for a crossover where Dawn is found in a lab by SG-1 and after looking at her records of all the tortures she endured,including vivisection, they try to help her heal

and a fic were the Gang does something  cruel to Xander and Anya curses them with deafness and blindness while giving Xander Slayer strength and magic.Xander ends up n LA with Angel

Please and thanks