Arlington mother Iesha Mustafa hoped to quickly find a good role model for her 10-year-old son, Isaiah Hassell, through the Big Brothers Big Sisters program. Isaiah was one of more than 400 children sitting on the Big Brothers Big Sisters of Greater Tarrant waitlist. The male mentor shortage is not new, said Maeve Mitchell, community engagement manager for Big Brothers Big Sisters. Big Brothers Big Sisters of Greater Tarrant community engagement manager Maeve Mitchell sits at her desk in Arlington on Aug. 28, 2025. Big Brothers Big Sisters is seeking mentors.