Susan Boyle is currently in The Priory - the same rehab used by Kerry Katona and Amy Winehouse.
She was taken by ambulance from her London hotel room last night and is being treated for exhaustion.
Being asked to perform over and over, and being asked to appear on TV in many different countries, and then eventually losing the show has taken its toll on Susan, although her brother, Gerry, denies she is mentally ill.
Britain's Got Talent judge Piers Morgan, said she was "just exhausted" and has been "physically and mentally sick".
This afternoon, it is reported that she is recovering well.
Source: http://news.bbc.co.uk/1/hi/entertainment/8076413.stm
and ITV Evening News
Also:
http://www.facepunch.com/showthread.php?t=747718