Because of “security issues” that may include concerns that she is part of a wider espionage plot, both Ai-Da and her sculpture were held in Egyptian customs for 10 days before being released on Wednesday, sparking a diplomatic fracas. “The British ambassador has been working through the night to get Ai-Da released, but we’re right up to the wire now,” said Aidan Meller, the human force behind Ai-Da, shortly before her release. “It’s really stressful.”