Can we compare her collapse to that of Tiger woods.
Lack of concentration caused by too many distractions.
I disagree. As jalimon mentioned, she was never a ranked top 10 player for very long. Sure, she went far in several grand slam tournaments. But she was lucky into getting good draws due to many top seed upsets in those tournaments. My guess is that she was possibly playing way over her head at the time and other players didn't know anything about her game. Once they started studying her game more, she lost her edge. Also the fact she never progressed and many may say she disgressed.
Blaming it on off-court distractions is scapegoating. Most top-ranked players face the same distractions if not more.
I'd add that she may have peaked way too fast for her own good. It allowed her to get too comfortable and it hurt her game and potential.