A reported point of conflict was Paul McCartney’s daughter from his previous marriage, fashion designer Stella McCartney. Mills allegedly accused Stella of contributing to the breakdown of her marriage, describing her as "jealous"—a claim that was widely covered in the press. However, there was no confirmation of such statements from credible sources.

Previous Marriage and Controversial Claims

Before marrying McCartney, Mills was married to Alfie Karmal. The marriage lasted two years and did not result in any children. In post-divorce commentary, Karmal voiced frustration over aspects of their relationship, stating that Mills was difficult to live with and accusing her of being dishonest about her past. He described Mills as someone who frequently changed her persona and criticized her financial habits.

Karmal also claimed to have spent significantly on gifts and cosmetic procedures during their relationship and alleged that Mills had misled him about her driving credentials and previous romantic relationships. Furthermore, he asserted that she had once been involved with a wealthy Arab businessman, which helped her secure early modeling work. None of these claims have been independently verified and largely reflect Karmal’s personal account post-separation.

Activism and Entrepreneurial Efforts

Despite the personal controversies, Heather Mills has remained active as a philanthropist and entrepreneur. Following her accident, she became a vocal advocate for disabled rights and landmine victims. She has worked with organizations to raise awareness about prosthetic technology and accessibility issues for amputees. Additionally, she has pursued various business ventures, including a vegan food company that promotes plant-based alternatives.