Nope, it's just one of the random things she can say when you approach her.
Thing is, the way the Lane detoxing content is written, almost any crew member can initiate it - even Kiro (though the only one with unique dialogue is the currently unrecruitable Dane - everyone else uses the same dialogue). So, it's theoretically possible for her to start the detox process, then say this during (or after) it. In that case, I'd interpret it as her reminding Steele not to go back to Lane - or fall for the same trick again.