Im Confused... Where Did Faith Go When She Left in Season 3 o 4 (i cant remember)

at the end of Season 3 Buffy put her in a coma. When she emerged from the coma in Season 4 after a showdown with Buffy she left for LA. Buffy followed her there and basically ordered her to go to prison which she did. She broke out of prison in Buffy Season 7/Angel Season 4 to help ángel then went to Sunnydale to help Buffy. That's the short version.