Mariana has provided legal training on press freedom, defamation and access to information issues to reporters from a non-profit organization of female journalists. She has also helped a community based association in the negotiation of a contract to turn an abandoned public building into a community center for educational and recreational services. Additionally, Mariana has provided pro bono services to non-profit organizations assisting in reconstruction efforts in Puerto Rico after the hurricanes of 2017 and to a foster home and adoption center.