Vella is a partner at Morris Nichols where she provides advice on corporate governance matters and a variety of corporate transactions for publicly traded and privately held corporations. She  is involved with the American Bar Association's mergers and acquisitions committee and corporate laws committee, and is co-chair of the subcommittee on acquisitions of public companies and co-chair of the joint task force on governance issues in business combinations. 

She is a member of the council of the corporation law section of the Delaware State Bar Association and, in that capacity, participates in the annual review of, and preparation of amendments to, the Delaware General Corporation Law.

Vella also speaks on Delaware corporate law issues at corporate law seminars and symposia around the country, including the Tulane Corporate Law Institute, the University of Texas Mergers and Acquisitions Institute, the Ray Garrett Jr. Corporate and Securities Law Institute, the Northwestern Law Securities Regulation Institute and the ABA National M&A Institute.