When Chloe is kidnapped in the season one episode Obscura, Clark and Pete are in the Talon discussing why Chloe has not called them from Metropolis to let them know she's all right. Pete suggests that she may just be out partying with her cousin, when in reality she was kidnapped and never made it to Metropolis. While it is never confirmed, Lois and Lucy Lane are the only cousins that Chloe ever mentions. Later in the same episode Chloe's father Gabe Sullivan mentions that he tried calling Chloe's cousin but it keeps going to voicemail.