Alphabetizing non-hyphenated names

Jones-Smith, Susan (Jones-Smith is one element and her last name.)

Smith, Susan Jones (Smith is one element and her last name.)

You need to know how she uses it. If "Jones Smith" is her last name then it is filed as "Jones Smith, Susan."
My rules of alphabetizing are as follows:
1. Single name: Smith, Susan J. (Jones is her middle name)
2. Hyphenated name: Jones-Smith, Susan
3. Compound name: Jones Smith, Susan

If you file compound names as Wondergirl suggests, you will not be able to find the file when Ms. Jones Smith calls to discuss something