Family #B-1063 in The Immigration of German Colonists to Denmark and Their Subsequent Emigration to Russia in the Years 1759-1766.
Family #5 in the 1775 census.
Family #81 in the 1798 census.
Trauenfelder is probably a misspelling of Christina Barbara's maiden name. I checked German records online and the name doesn't exist. It could have been Trauen, but I found no one with a name and birth date that match hers. Translated, the word Trauenfelder means "trust fields." I'm not sure if that means anything specific to her or her father.
She is first mentioned in The Immigration of German Colonists to Denmark and Their Subsequent Emigration to Russia in the Years 1759-1766 as the wife of Johan Wendel Meisner.  The couple married in 1761, shortly before they immigrated to Denmark. I looked up the town of Kropp, where it says they married, and it is located on the northern border near Denmark, on a peninsula between the North Sea and the Baltic Sea.
Although they entered the country childless, they had at least one child before they left Denmark to immigrate to Russia. After they arrived in the Colony of Grimm, they had three more children before Johann Wendel passed away. By the time of the 1775 Grimm census, Christina Barbara had remarried Georg Schneider, 14 years her junior, and the couple had a six month old son.
1775 Grimm Census 
She is not mentioned in the 1798 census, but her son Johannes is, and it is noted that his mother was Georg Schneider's deceased first wife. According to that same census, she also had a daughter named Anna Dorothea. A copy of that census is included here to connect her to her children. See Child #5 and Child #6 below.
1798 Grimm Census 
Her husband's oldest child with his second wife was 9 in 1789, indicating that his first wife died before 1788. This would allow for her widowed husband to remarry and have a child by 1789.
Note: Christina was also the name of Georg Schneider's second wife. Her full name was Christina Katharina Bernhart.
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