Yvette
Public marriage records are usually kept at the county level, so without a location it will be difficult to locate the record in that fashion.
Since you are a member of the immediate family, I suggest you visit this link and request a certified copy from the state. Note that they will search a 5 year period for the $12.00 fee.
http://www.kdheks.gov/vital/
Good Luck
Dave Goldy
Overland Park, KS