Mary Niederlehner has volunteered with Nursing Students Without Borders (NSWB) of Virginia Commonwealth University, assisting Mayan communities in Guatemala with health screenings and education. NSWB of VCU, modeled after Doctors Without Borders, strives to provide medical assistance worldwide to those affected by crises. In addition to international missions, NSWB fosters local support through initiatives like a mentorship program pairing experienced nurses with new members to help them adjust to the nursing field.