Mngh...[Oh great, a length of time question. He's not so great at those.]

Knew her on Pandora, don't remember how long. Months, maybe? Maybe a year...[Handsome Jack hadn't been killed in a day, after all. Unfortunately.] And she's been with me since she got here. [He pauses, squints off into the near distance briefly as he thinks back to a conversation he had with her just recently, then returns his gaze to Thida.] Five months!

[So...He's known her for a while, now. 8)]