Hi, Sorry I can't be of help - but a thought - Have you considered contacting the Cemetery Office - they may have some information. They will know the name of the Funeral Home in charge of arrangements - The Funeral Home - may have taken the information for the Registration of Death - perhaps they may be able to assist with some questions - without invading the privacy of the deceased.
Public Libray for Daysland - Or Daysland Municipality - may have information re Mah Wing Hime and the Daysland Cafe - that may help with your quest.
Cheers, Stella