Mayor Bill de Blasio’s chief spokeswoman abruptly announced Thursday that she would quit.

The spokeswoman, Karen Hinton, said in a statement that she would stay with the administration through the end of budget negotiations for the upcoming the fiscal year, which begins July 1.

In a statement, Hinton said, though she would continue to support the mayor’s agenda, she will spend more time with her family.

“I will do so as I spend more time with my teenage daughter, who will be a senior in September,” Hinton said. “While I have to admit she is not missing me that much, I am missing her a great deal and want to be part of her last year at home before college.”

Hinton, who knows de Blasio from their time together working for now-Gov. Andrew M. Cuomo when he was secretary of housing and urban development in the Clinton administration, is married to Cuomo’s former top aide, Howard Glaser.

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When she was hired last year, Hinton filled a void for a press secretary that had been open for months. Months later, she gave quotes to The New York Times critical of Cuomo that were rescinded in the same article in rare fashion by a colleague, de Blasio adviser Phil Walzak.

No successor was immediately named for Hinton, a native of Mississippi.

“Karen Hinton has served our administration with skill, with devotion, with a passionate commitment to others, and she will be missed,” de Blasio said in a written statement.

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The administration and de Blasio’s inner circle have been buffeted in recent weeks by news of at least six investigative tentacles scrutinizing his fundraising methods. Hinton had not been implicated in the probes.