Prativa has been working as an accountant at Best Accountants since July 2020. She married Ray in August 2016 who at that time had been working as the Chief Financial Officer at Sydney Finance Miracle. On their first wedding anniversary, Ray promised to buy a diamond necklace for Prativa. However, Ray lost his job immediately before the anniversary and as a result could not carry out his promise to Prativa. Their relationship started deteriorating. In December 2021, they agreed to end their relationship by way of divorce and as required by law, since then they have been living separately. In the meantime, while Ray was going through financial hardship early this year, Prativa lent him $10,000 upon the promise that Ray would repay the loan within a month.

Required:Advise Prativa whether she can enforce Ray's promise to buy her a diamond ring and to repay the loan under the Australian contract law. Refer to relevant case laws in support of your answer.