Complex sentence: Catherine had a talent for writing and an urge to be read, so it was natural that in her teens she became attracted to journalism through family connections, beginning at first with short pieces and poetry published in "The South Australian".
Split into simpler sentences: Catherine had a talent for writing and an urge to be read, so it was natural that in her teens she became attracted to journalism. Through family connections, she began with short pieces and poetry published in "The South Australian".