It's possible that:
* The name is misspelled: Double-check the spelling.
* The author uses a different name: Perhaps she uses a pen name.
* The author is relatively unknown: It's possible she has written works that haven't received wide recognition.
To help me find more information, could you provide any additional details you may have about Doris Louise Seger, such as:
* The genres she writes in
* Any specific titles of her books
* Any information about her background or location
With more information, I can try to locate her works or uncover any information about her writing career.