Little House on the Prairie S09 E12 Marvin's Garden

"Together, a pioneering family faces a crucial test of its courage and its love!"

Jenny looses a necklace in a pond and almost drowns trying to get it. After the incident, she has partial brain damage and has to retrain herself to talk and walk. Jenny's friend, a retired doctor, helps Jenny to force herself to get better. Thanks to him, Jenny makes a complete recovery.