Little House on the Prairie: Season 3, Episode 16

3 - 16: To Live with Fear (1)

Mary is kicked in the stomach by one of the family's horses, but insists that she is fine. Her internal injuries worsen over time. Unable to be properly treated by Doc Baker, she is hospitalized in Rochester, where she must undergo surgery. As if this weren't stressful enough, Charles and Caroline are in a position where they may not be able to afford the mounting hospital bills.