Hi,
Nebraska doesn't publish their vital record dates which makes research in this state more challenging.
You can contact the Webster county Clerk,
www.co.webster.ne.us/webpages/clerk/clerk.html and order a copy of the marriage license. If she was married after 1909, marriage licenses are filed with the Nebraska State Bureau Vital Statistics,
http://dhhs.ne.gov/publichealth/pages/vitalrecords.aspx. However, there are restrictions.
The Webster County Historical Museum,
www.redcloudnebraska.com/attractions/ has marriage annoucements and newspapers. Successful Searching!