Complex sentence: Famed poet W. H. Auden was among the writers she met there in the early 1960s, and around that time she also began publishing her own poetry (later collected in her 1972 book of poems "Monster").
Split into simpler sentences: Famed poet W. H. Auden was among the writers she met there in the early 1960s. Morgan began publishing her poetry in the early 1960s (later collected in her 1972 book of poems "Monster").