She is at fault if you can prove that there was Proof Of Delivery.
2) that there was no transaction of her paying for the goods
3) you have a record that she have no intention to pay you or send the goods back.
with this 3 evidence proceed to the following
http://app.subcourts.gov.sg/sct/index.aspx 
"When people consult me, it's not that I'm reading the future; I am guessing at the future. Based on the omens of the present. If you pay attention to the present, you can improve upon it, what comes later will also be better."
