Arielle joined Mills & Mills LLP in 2023 as an Estate Litigation Associate. Arielle’s practice focuses on estates, wills, trusts, and capacity litigation. She advocates for her clients before all levels of court in Ontario.

Arielle advises clients on a broad range of estates and trusts matters, such as will challenges and defence, will and trust interpretation, passings of accounts, dependant’s support claims, trustee and attorney disputes, and guardianships. She also advises trustees and fiduciaries on all aspects of the administration of estates and trusts, including applications for certificates of appointment of estate trustee.

Prior to joining Mills & Mills LLP, Arielle was an associate at a national full-service law firm where she gained experience in commercial litigation with a focus on estates and trusts disputes. Following her call to the Ontario Bar in 2019, Arielle was an associate at a top estate litigation boutique firm in downtown Toronto. She is also experienced in the practices of Ontario’s Office of the Children’s Lawyer and Office of the Public Guardian and Trustee, having worked at these offices as an articling student and summer law student, respectively.

Arielle received her Juris Doctor from the University of Toronto, Faculty of Law and earned her Master of Social Work concurrently. While at law school, Arielle worked as a caseworker in the Family Law division of Downtown Legal Services. She also worked on human rights advocacy and policy development as a practicum student at the Ontario Human Rights Commission. Prior to obtaining her law degree, Arielle graduated with an Honours Bachelor of Science from the University of Toronto with a specialist in psychology and major in sociology.

Year of Call



Honours Bachelor of Science (HBSc), University of Toronto, 2014
Master of Social Work (MSW), University of Toronto, 2018
Juris Doctor (JD), University of Toronto, 2018


Law Society of Ontario
The Advocates Society
Toronto Lawyers Association
Canadian Bar Association
Junior Trusts and Estates Practitioners


COTA Health

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