Rosleny joined the United Nations Office of National Spiritual Assembly of the Baha'is of the United States in August 2017. One of her roles is to explore ways youth can contribute to the betterment of society by working with non-governmental organizations and other youth advocates on issues such as racial inequality, advancement of women, and the role of religion in society. Her previous work experience includes adolescent counseling along with development for academic and non-profit organizations.
She holds a B.A. in Psychology and Africana Studies from Franklin & Marshall College.
Rosleny was part of the 62nd Commission on the Status of Women Conference Planning Committee by serving on the Artisan Fair sub-committee and Reception sub-committee. Rosleny was the Youth Co-chair of the Conference Planning Social Media Sub-committee to the 67th UN DPI/NGO Conference in New York, NY.