Blake portrayed gushy gossip columnist Dora Bailey in Singin' in the Rain (1952) and was a model for one of the fairies in Walt Disney's animated version of Sleeping Beauty (1959). She appeared as Mrs. Porter, a babysitter, in the 1959 pilot of CBS's Dennis the Menace. About this time, she was cast in a guest-starring role in the sitcoms, Guestward, Ho!, with Joanne Dru on ABC, and Angel, with Annie Fargé on CBS. In 1961, she guest-starred in the episode "A View of Murder" of the syndicated crime drama The Brothers Brannagan. Blake's Flora MacMichael was a romantic foil to Walter Brennan's Grandpa Amos McCoy on The Real McCoys, a situation comedy about a West Virginia mountain family that relocated to Southern California.