Is it good girl THING or FAITH??

I was reading the 1989 songbook and came across the lyric. Every time I've read the lyrics or listened to Style I've gotten "faith", but "thing" is what's printed, even on the Taylor's Version songbook. Must be a mistake?

I was reading the 1989 songbook and came across the lyric. Every time I've read the lyrics or listened to Style I've gotten "faith", but "thing" is what's printed, even on the Taylor's Version songbook. Must be a mistake?