Have you considered the chance he's not a psycho freak but just awkwardly naive and clueless about his confused emotions and the way they're perceived? Or that you're seeing your friend in an overly condescending tone, assuming she's not directly asking you for help and that she's in control of her actions?

Said that, she'd get an idea by remarking concrete limits to her independent behavior (for example, in financial terms by keeping a job/secure income, as in emotional ones by staying open and connected to her family, your or other friends views). If he gets pissed off at that, it'll show he's seeking a dominant role and settle his intentions.