The cousin of a Swedish bride says she wanted to call off her wedding to the man accused of murdering her during their honeymoon in South Africa, as her family marks the one-year anniversary of her death with candlelight vigils.

Sneha Hindocha said her cousin, Anni Dewani, 28, threw her wedding ring at Shrien Dewani during an argument a few days before their marriage ceremony in India, the Sunday Mirror reported.

Murdered ... Anni Dewani reportedly nearly called off her wedding to husband Shrien.

But Ms Hindocha told her to not to break up with the millionaire British businessman and to talk things through with him instead.

"She was crying and absolutely serious about calling it off. I said she should tell him how she felt and, if he could understand her, then maybe she should go ahead with the wedding," Ms Hindocha said.