I think she was always just faking her voice tbh--I mean she DEFINITELY was in interviews. It's almost cringeworthy now when you watch old ones and she talks in that fake voice

And when she laughs she accidentally breaks into her real voice.
Faking (or just processing it a lot) her singing voice doesn't seem like much of a stretch. I remember being shocked by her "new" studio voice when Bad Romance came out (in a good way)
