I remember feeling that. I couldn't do, nor did I want to do, the kinds of roles I'd been doing.

That's just it's wrong. In September 1985 Barbara Cook appeared with the New York Philharmonic as Sally in the renowned concert version of Stephen Sondheim's Follies. Personal life
Barbara Cook married acting teacher David LeGrant (December 7 1923 - July 28 2011) on March 9 1952 and divorced in 1965.

Today Cook is widely recognized as one of the "premier interpreters" of musical theatre songs and standards in particular the songs of composer Stephen Sondheim. During her years as Broadway’s leading ingénue Cook was lauded for her excellent lyric soprano voice. Barbara Cook (born October 25 1927) is an American singer and actress who first came to prominence in the 1950s after starring in the original Broadway musicals Plain and Fancy (1955) Candide (1956) and The Music Man (1957) among others winning a Tony Award for the latter.