'her impetus' is correct and can be used in written English.
You can use it to refer to the driving force behind something that a person does. For example: Her strong desire to help others was the impetus for her to start volunteering at the homeless shelter.
But when she was there, her impetus was the other way round: she wanted to Appleize Burberry.
Indeed, part of her impetus in writing "Adulting" was to defend millennials against their reputation for being entitled and self-absorbed.
"Her impetus for her involvement is that she grew up around this," he reflected during an interview in Washington, where he held meetings on Capitol Hill on Monday.
"They'd print up new pages," Mr. Arnett said, "and by the time you'd get them, they're still warm, and they'd say, 'Throw those away — here it is now.' " Ms. Russell said a certain amount of madcap uncertainty had been her impetus for joining "Running Wilde".
Whether you agree with Hale's decision to knock on her troll's door, we can all understand her impetus.
Vincent, who is now budgeting and paying off her debt, credits her boyfriend for giving her the impetus to make a positive financial change.
Her journey from a poor, remote community, 1,500 km north of Perth, has given her the impetus to grasp opportunities as soon as they arise.
Imagine each vivid slash of color as a character, with his or her own impetus toward loss and stubborn striving.
Her creative impetus dates back to when she saw, outside the Merseyside Maritime Museum, one of the ship's recovered bronze propellers, "stark and huge as a dinosaur bone," and when she first examined the "yellowing, cracking photographs of the dead" to be found in the Cunard Company archives, at the University of Liverpool.
The business enterprise has not only helped Jennifer emerge from a shell, it also has given her the impetus — and desire — to dream about the professional sports world or the Walt Disney Company as potential employers after she gets out of school in two years, Ms. Marsh said.
