Shelsea attended Mercer University in Georgia, where she doubled majored in engineering and economics, with a minor in business administration. She received her Juris Doctorate from Seattle University School of Law in 2020, where she was also an editor for the Seattle American Indian Law Journal and a member of the Black Law Student Association.

Prior to joining Scheer.Law PLLC, Shelsea worked at Deloitte as an international tax consultant helping her clients' tax returns and come up with answers to complex tax issues. She also worked at Foster Garvey, doing transactional law in the Investment Management field, in which she provided support in primarily domestic and international investments for public and private institutional investors. Outside of work, Shelsea enjoys traveling, cooking, reading, and watching nature documentaries.