Here are a few news items I found. Type Foy in the FIND field to go directly to the item.
Mamie Foy, 14, injured at Escalante:
Richfield Reaper 07-28-1932http://udn.lib.utah.edu/u?/rich2,12713
Mamie Foy visit:
Garfield County News 07-12-1935 http://udn.lib.utah.edu/u?/garfield2,5568
Mamie's parents marriage (in case you didn't have it already):
Marriage ID: 445426
Groom's Surname Name: FOY
Groom's First Name: John M. (23)
Bride's Surname Name: MARTIN
Bride's First Name: Pearl (17)
Place: Panguitch, Garfield, Utah
Marriage Date: 05 Feb 1913
Bride's Residence: Tropic, Garfield, Utah
Groom's Residence: Panguitch, Garfield, Utah
John Foy burial:http://history.utah.gov/apps/burials/execute/viewburial?ceme...
I was unable to find a marriage record for Mae/Mamie. Don't know if any of this is helpful, but I thought that the article about Mamie's injury was interesting at least.