Ginia Rinehart uses sister Bianca's previous mental health issues in court Seeking medical records: Ginia Rinehart (right) with mother Gina. The youngest daughter of mining magnate Gina Rinehart wants to use her sister Bianca Rinehart's mental health issues - including an eating disorder from which she has since recovered - to show why she should not be trustee of a $5 billion family trust, in a twist in the bitter family saga. Ginia Rinehart wants her sister to hand over her medical records relating to any psychological issues as part of an investigation into whether she would be an appropriate person to manage the warring siblings and their share of the lucrative family business, Hancock Prospecting. Mrs Rinehart, who is Australia's richest person and worth an estimated $22 billion, is the only other shareholder. "My husband's motivation in agreeing to be put forward as a trustee replacement was to shield me from further personal attacks": Bianca Rinehart and busband. On Friday Bianca spoke out for the first time since the proceedings began, saying despite Ginia's personal attack she loved her and carried no animosity. "Ginia's lawyers want to investigate my medical history," she said in a written statement. My whole family knows I had an eating disorder in my late teens. I love my sister and bear no animus towards her for this approach and I'm addressing it as I strongly feel that nobody should be ashamed to seek help for any mental illness and have the support of their loved ones in so doing. Bianca, 37 and married with a son, was diagnosed with the condition when she was just 18. She was admitted to a clinic in London, which was paid for by her mother, and had gone on to work at the flagship family company, Hancock Prospecting, where she was a director for 13 years until the current dispute erupted. At no time during her tenure was her eating disorder raised as an issue that might affect her work, and it is understood Bianca does not believe it would affect her ability to be trustee of the Hope Margaret Hancock Trust. Bianca was also treated for depression in 2000 and 2003, but that issue is understood not to relate to the eating disorder. The move is seen as an attempt to force Bianca into withdrawing her nomination - due to her young son, she is not prepared to continue to stand if a full-blown investigation is sanctioned by the court. The move by her younger sister to attack her mental health led Bianca to nominate her husband, Alexander Vladimir Serebryakov, known as Sasha to his friends, to stand as replacement trustee. "My husband's motivation in agreeing to be put forward as a trustee replacement was to shield me from further such personal attacks by Ginia's lawyers," she said in a statement. He currently holds the position of general manager, business development at resources company Rio Tinto. Earlier in the week the court heard Mrs Rinehart did not know that the couple - who have been together for six years and have a three-year-old son together - wed in an intimate ceremony in Hawaii with only 20 guests. The dispute erupted days before Ginia was due to turn 25 and the trust was due to vest, with Mrs Rinehart telling her children they would be bankrupted due to capital gains liability. Eldest sibling John Hancock and his sister Bianca, as well as Hope, sued, alleging their mother had breached her duty as trustee and acted deceptively. Hope settled with her mother. In October, Mrs Rinehart announced she was relinquishing the role of trustee and the question has now turned to who would be a suitable replacement. The case returns to court next week.