Rebecca Ferguson is being sued by the management company she condemned on Twitter earlier this year.
But rather than contest the claims she made against them, Modest Management are demanding 20% of her earnings for the next three years, because she had signed a five-year contract with them back in 2010 and "unlawfully" terminated it.
Modest Management were sacked by the singer in June after they allegedly made her work through ill-health until she collapsed with exhaustion.
According to BBC News, a lawyer for the company cites an email received from the star that reads: "I am really unhappy with how I have been treated by you over the last couple of months and how miserable I have become.
Rebecca performs (WENN)
"The deterioration of my health has not been relevent [sic] to you until this week when it reached another low point... I have lost all faith and trust in you as managers so I have no option but to terminate our working relationship with immediate effect."
The company's lawyers then replied saying that it accepted her "renunciation and repudiation of the management agreement", but she "did not accept" this interpretation of events.
Perhaps responding to the lawsuit on Twitter (though it is not yet certain), Ferguson wrote: "..to my fans all i want to say is i am happy i am well and i am focused on work .. for a long time i was not well but now i have never felt better and i am looking forward to all the amazing things i have coming up this year [sic]
"you have to go through things to learn and to grow as an artist and indeed as a person... I've lost many friends and many people around me fame comes with good and bad ... but one thing I've learned and that will never leave me what my mother always taught me nothings more important than love and keeping your heart right"
Ferguson did not explicitly state that her words were a response to the lawsuit, but that they were pertaining to something that will be in the press this week.
Her debut album Heaven has been named as a possible contender for this year's Mercury Music Prize.
PHOTOS: Rebecca on tour