Forde, 25, lost control of her Fiat 500 on the M40 before crashing into the central reservation and flipping the car, according to the Daily Mail.
She was reportedly taken to hospital in the early hours of Sunday morning as a precaution after suffering a blow to the head, but was later discharged.
When asked about the crash, McIlroy is quoted as saying: "I saw she was [in car crash]. If anyone's in a car crash you're glad to see they're okay. She's okay and that's good."
McIlroy is busy preparing for The Open Championship, which gets underway at Hoylake on Thursday.