So what we have is a professional signs a short term contract, fails to fulfill their part of the contact and leaves.
She's been doing her job for the last decade, has several million in the bank so could, for the sake of her mental health step away from the pressure and the limelight and enjoy a quieter time playing the game she loves.
Of course she'd give up this, from Wiki:
Osaka is one of the most marketable athletes in the world. She earned an estimated $16 million in endorsements alone in 2019, which placed her second among female athletes behind only Serena Williams who earned $25 million. The following year, she became the highest-paid female athlete of all time, having earned $37.4 million in total, including $34 million in endorsements. Overall, she was the 29th highest-paid athlete in 2020 and the 8th highest-paid athlete in endorsements alone.