I am not sure what you mean by a viable option, but she is listed there.
Birth Information for LAWRETTA RASMUSSEN
(State File Number: 786069)
File Date: 08/23/1961
Birth Date: 05/03/1899
Mother's Name: DENNA RASMUSSEN
This page tells how to order the certificatehttp://doh.sd.gov/records/order-birth-records.aspx