She just needed Akiko's mesh ID and her access codes.  Surely someone as high up as Akiko would have full mesh access...she doubted Akiko had the codes to access her own file, but she would provide the means by which Ishi would hack into the system, retrieve the information, and then get out of here with her.  She was on Venus, if she wasn't still on the station she'd launched her operation from, she knew where she could go.