Complex sentence: Martha was born near Morgan, South Australia in 1863, an attractive woman with a kindly disposition she grew up in a violent and abusive household, and had shown signs of mental instability from an early age.
Split into simpler sentences: Martha was born near Morgan, South Australia in 1863. An attractive woman with a kindly disposition, she grew up in a violent and abusive household, and she showed signs of mental instability from an early age.