After she stabbed Angel & sent him to Hell, she was quite depressed & had to leave Sunnydale-- I hope she got some help
Yes, Buffy and Faith had to stab him a few times to kill him, but that's... [DOC] [TLE] Buffy the Vampire Slayer S2E22 "Becoming, Part 2" / Recap - TV ... [PAR] Following a heated argument, Joyce tells Buffy that if she walks out of the ... him 
and drives her sword through him, sending him to Hell and sealing the portal.