Mary Ann Tarwater is a character who makes a one-time appearance in the Season 2 episode titled "Inn at the End of the Road".
Mary Ann Tarwater is the wife of Charlie Tarwater. They are homesteaders who live in a small cabin somewhere in the Halonan National Forest. When she goes into labor two weeks early and there is no means of getting her to a doctor, she and her husband are forced to call in Jason "Doc" Gifford, for help. "Doc" is not really a doctor. He is a bush pilot but he had received medical training in the service. She tells her husband not to worry as "Doc" has done it lots of times. She doesn't know that "Doc" is delivering a baby for the first time!
Mary Ann Tarwater is played by Lynnanne Zager (billed as Lynnann Zager).