The phrase "win her affection" is grammatically correct and can be used in written English.
It is a common phrase used to describe the act of gaining someone's love or admiration. Example: After months of trying, he finally managed to win her affection with his charming personality and thoughtful gestures.
The course of her life is shaped by Frank's need to repeatedly win her affection.
He wanted to show her how far he would go to win her affection.
To meet her family's charge that he had practiced magic to win her affection, he wrote the Apologia ("Defense"), the major source for his biography.
In the other particularly well-etched story, a young factory worker (Angelababy) toys with a male admirer (Jing Boran) by ordering him to stand in a particular spot for 100 consecutive days if he wants to win her affection.
THE WORLD It's love at first sight when a 23-year-old musician (Michael Cera) glimpses a girl with popsicle-bright hair (Mary Elizabeth Winstead) at a party, but before he can win her affection, he has to fight off her seven violently possessive former lovers.
Meanwhile, they must try to win her affection and get her help securing green cards by cheerfully doing her bidding -- vacuuming, picking up after her teenage sons, washing clothes and dishes, fetching dry cleaning, helping the caterers, following her dog with a pooper scooper and cleaning the neighbor's house for peanuts.
Failing to win her affections, Mr. Hinckley stalked President Jimmy Carter and was eventually arrested on firearms charges.
Trouble looms when Natasha, dazzled by the heady whirl of Moscow society, falls prey to the charms of Anatole (the amusingly preening Lucas Steele), a womanizer who enlists his sister, Hélène (Amber Gray, glamorous and scheming), to help win her affections.
Rejected by his mother's proud family and raised by their housekeeper, he falls in love with Carmen, the beautiful daughter of a wealthy landowner, and begins a lifelong quest to win her affections, even braving the nearby Cave of Rattlesnakes to prove his worthiness.
Donald Trump reportedly gave Princess Diana "the creeps" as he tried to win her affections.
A decade later, Chris lands back in his hometown, where he reconnects with Jamie and vows to win her affections.
