I thought KLS' best acting in the series, by about a mile, was in 1966 when she and Joe were just starting to court. She gives such depth to those scenes, particularly in the non-verbal part.
Her best moments post '67 were the too-few early episodes of Lady Kitty. I loved it when she confronted Count Petofi, thinking he was behind the odd occurrences at Collinwood. She seemed so fearless, yet she exuded a liquid charm that completely wowed the old fiend.
G.