The part of the sentence "she has forgotten" is correct and usable in written English.
You can use it in any sentence where the narrator is talking about someone who has forgotten something. For example: My sister had promised to make me dinner, but she has forgotten.
She said she has forgotten most everything, especially math.
By the time the chairman is ready to introduce her she has forgotten Miss Kimbrough's name.
She has forgotten where she came from and you should never forget where you come from".
It's quite possible that she has forgotten all about the night of the noises.
She has forgotten to turn off a burner, a common enough mistake; the olfactory lapse is the puzzle.
They're all three laughing, Ellen, too; she has forgotten to be mournful and dreamy, despite her dead friends.
Joked Harman in response: "She is so worried about jobs she has forgotten to put her clothes on".
Perhaps she has forgotten the failed 1988 attempt at a TV revival, starring Melora Hardin and Patrick Cassidy.
A homeworker (noun) is a student who reminds the teacher that he/she has not given the class homework because he/she has forgotten.
Studies have shown that in the near future, homeworkers will begin to participate in after-school sports and activities where they will remind the coach when he/she has forgotten to add an extra mile to their conditioning workouts.
Regardless of how often these thoughts (DTP10 and DTP11) may come to clinicians in real life when the visit has ended (e.g., " I forgot to ask about Z symptom... ..........), we assume that any clinician who suddenly realizes he/she has forgotten to follow a line of enquiry would correct this immediately by asking about the matter.
