Bio
Sarah Oster Kelly is an attorney in DarrowEverett’s Private Client Group focusing on trusts and estates, probate and fiduciary litigation, and family law. With more than 10 years of experience, she provides clients with thoughtful, comprehensive legal guidance.
Sarah brings deep knowledge of managing estates, fiduciary responsibilities, and executing clients’ wishes. She has developed estate plans and trusts to protect assets clients have spent lifetimes acquiring, growing, and preserving. Her specialties include asset protection and tax planning for high-net-worth individuals and families with complex assets, blended families, beneficiaries with special needs, and clients navigating life transitions. In family law, Sarah guides clients through high-stakes matters such as prenuptial and postnuptial agreements, custody disputes, adoption, and divorce. She is attuned to the intersection of family dynamics and financial considerations, helping safeguard both personal and financial futures.
Sarah understands that effective estate and trust planning requires a comprehensive approach. She works closely with clients’ accountants and financial advisors to ensure seamless strategies. With her big-picture perspective, she coordinates the advisory team to achieve clients’ goals efficiently and collaboratively.
Sarah is bilingual and provides legal counsel to both English and Spanish speakers. Beyond her legal work, she has served on the Board of Directors for the Northern Rhode Island Boys and Girls Club for over a decade. She is also a member of the Rhode Island Bar Association Executive Board and Co-Chair of the Rhode Island Bar Association Diversity, Equity, and Inclusion Committee.
Prior Experience
Before joining DarrowEverett, Sarah worked at a New England-based firm ranked in the National Law Journal’s top 500. She also has experience working at a Providence-based boutique law firm that specialized in family law, wills and estate planning, criminal law, and contracts.
Accolades
- Rhode Island Monthly, 2025 Professional Excellence in the Law
- Super Lawyers — Rising Stars, 2017-2022, 2024-2025 (Estate Planning & Probate)

Practice Areas
- Trusts & Estates
- Family Law
- Prenuptial and Postnuptial Agreements
- Litigation & Alternative Dispute Resolution
- Legacy Planning
- Succession Planning
- Multi-Generational Wealth
- Complex Estates
- Tax Optimization
- Asset Protection
- Probate Administration
- Family Governance
Bar Admissions
- Rhode Island
- United States District Court for the District of Rhode Island
Education
- Roger Williams University School of Law, J.D.
- Roger Williams University School of Law, Certified Mediator
- Wheaton College (Norton, MA), B.A., Political Science
Involvement
- Edward P. Gallogly Family Law Inns of Court
- Estate Planning Council of Rhode Island
- Rhode Island Bar Association, Executive Committee
- Rhode Island Bar Association, House of Delegates
- Rhode Island Bar Association, Diversity, Equity and Inclusion Committee, Co-Chair
- Rhode Island Family Court Bench Bar Committee
- Rhode Island Probate and Trust Committee
- Rhode Island Hispanic Bar Association, Treasurer
- Rhode Island Women’s Bar Association
- Northern Rhode Island Boys and Girls Club, Board of Directors
Representative Matters
- Successfully secured the removal of a trustee who failed to act in the best interests of a special needs trust beneficiary, safeguarding the beneficiary’s long-term financial and personal welfare.
- Achieved favorable judgment granting our client sole legal custody and primary physical placement of their children, demonstrating that the other parent’s significant mental health challenges posed a risk to the children’s well-being if left unsupervised.
- Strategically drafted and negotiated a prenuptial agreement that protected more than $7 million in premarital assets, ensuring our client’s estate remained secure and insulated from future marital claims.
- Assisted client in identifying, inventorying and forcing division of $16 million in cryptocurrency from multiple wallets and accounts, thereby allowing her to get out of crypto prior to the 2022 correction.
- Created estate plan for high-net-worth client post-divorce, covering $10 million in assets that went to the benefit of her minor children.
- Advised business owner with a diverse portfolio in developing a comprehensive estate plan that integrated advanced tax strategies and business succession planning. Our approach ensured long-term asset protection, minimized tax liabilities, and facilitated a seamless transition for future generations.
- Represented multiple clients in multimillion-dollar trust administrations and provided legal guidance on asset management and distributions.
- Represented trustee in a contested trust administration matter involving irrevocable trusts, sparing the estate unnecessary legal costs.
- Represented executor in complex probate proceedings for an estate, including filing necessary pleadings and resolving disputes among beneficiaries.
- Represented client appointed as guardian for disabled adult child in probate court. Aided client with long-term-care planning, Medicaid eligibility, and the guardianship process.
- Represented couple on their second marriage to create tailored estate plan for their blended family. Ensured clients’ assets were protected and distributed according to their wishes.
Insights
Media
- Professional Responsibility Panel, Panelist, Roger Williams University School of Law, April 2023
- “Wills and Trusts 101,” Presenter, National Business Institute, June 2019
- “The Probate Process from Start to Finish,” Presenter, National Business Institute, April 2019
- “Lincoln Library: Estate Planning Lecture Series,” Lecturer, Oster Law Offices, March 2019
- “Estate Planning: Top 8 Tools to Know,” Presenter, National Business Institute, February 2019
- “Tax Cuts and Job Act Impact on Divorce Planning,” Guest Speaker, SK Wealth Podcast, August 2018
- “Divorce Litigation from Start to Finish,” Presenter, National Business Institute, May 2018