Complex sentence: Even before her "discovery", Garon had been a steadily rising star, appearing opposite Owen Moore in 1922's "Reported Missing" and received much praise for her role in Henry King's adaptation of "Sonny" (1922).
Split into simpler sentences: Even before her "discovery", Garon had been a steadily rising star. Garon received much praise for her role in Henry King's adaptation of "Sonny" (1922).