By the late '50s Bonnie was recording on the Mar-Vel label with Fuzzy and his band, the Sun Valley Playboys. She cut a well-received duet album with Fuzzy, her sometime boyfriend, on Tally Records, which would later be re-released on Capitol Records as Just Between the Two of Us. In 1961, Bonnie saw Haggard singing for the first time at a Lefty Frizzell concert. At the time, Haggard was just a few months out of San Quentin prison for breaking and entering. By 1964 Fuzzy was managing Haggard and suggested that Bonnie and Haggard re-record Just Between the Two of Us. Taking Fuzzy's advice paid off; the song hit the top of the country charts but not for long. It was replaced by (My Friends Are Gonna Be) Strangers, Haggard's breakthrough single.
In 1965 Haggard signed with Capitol Records, married Bonnie, and signed the Strangers (including Bonnie) with a booking agency owned in part by Buck. Bonnie's marriage to Haggard lasted until 1978, but the two had already separated in 1975. Eventually Bonnie resumed touring with the Strangers in the late '70s and remarried for the final time to Fred McMillenher. She continued to tour regularly with Haggard and the Strangers. While Bonnie released half a dozen albums and numerous singles on Capitol Records in the mid- to late '60s, she remained satisfied singing backup as a member of the Strangers. ~ Al Campbell, Rovi