It's possible that she wrote under a different name or that her works are not widely circulated. To find more information, you could try:
* Searching online databases: Look for her name in online databases like WorldCat, LibraryThing, or the Internet Archive. These databases might have records of her books.
* Checking local libraries: Contact your local library and ask them if they have any records of Lilian Stoughton Hyde's works.
* Contacting literary archives: Researching literary archives or historical societies might lead you to information about her.
* Using a genealogy website: If you have any information about Lilian Stoughton Hyde's family, you could try searching for her on a genealogy website like Ancestry.com or FamilySearch.
Without more information, it's difficult to say definitively what Lilian Stoughton Hyde has written. Good luck with your search!