Jennifer Pastiloff had no idea who Allison Mack was when the Smallville actress followed her on Twitter back in 2014. Soon after, when Mack started emailing her, Pastiloff says Mack made a good impression. “She seemed really sweet,” Pastiloff, a writer and yoga instructor, tells PEOPLE exclusively. But that impression soon changed when Mack began writing her about “intensive workshops,” which the actress described as “the most profound and awesome thing I have ever done.” Pastiloff says that at that point, she became wary. “My radar went off when she wrote that these workshops would help me ‘close some gaps you may be finding,’” Pastiloff says, sharing a May 30, 2014, email purportedly from Mack.