The phrase "relent to" is correct and usable in written English.
It means to give in to something after a period of resistance. Example: After a long discussion, I eventually relented to her demands.
And the junk food!" Only under intense pressure will Mr. Miele relent to concoct unhealthy meals.
His family attributed Saudi Arabia's decision to relent to intense media publicity in Britain.
They certainly will not relent to the smaller tax cut favored in the Senate without a fierce fight.
"Put simply, I am a widow and the mother of four children, my youngest in high school and I WILL NOT Relent to Hatred.
Fawcett, however, was desperate for funding, and in the document he seemed to relent to a demand by the society that he be more forthcoming.
But the producers of the new Bond movie will have to relent to authorities in India who would not allow the filming of a stunt-filled action sequence that was to depict passengers riding on the outside of trains.
In the end, you only relented to keep order.
The Kansas State defense has not relented to Texas Tech's efforts to spread the field.
The horses' owners relented to the pressure and agreed to the meeting.
Ms. Stewart spent a month in jail, and then relented to a plea.
Finally, he relented to standing up at his seat and having his name announced at halftime.
