A short dialogue from the movie Extraterrestrial (2014):
— It's been ten years, Alan. Now look. I mean no disrespect, but it is time to face reality, man. She left you.
— People have been trying to convince me that she just split town, just took off with another guy. People have been saying it so long I almost believed it myself, but now I know what happened.
I've been searching online and couldn't find this idiom in any dictionary. Though, from the context I think I can infer that it probably means something like skipped town, which is a real idiom. Am I on the right track with this?