I use Hassan's model, keeping the cultist calm while reinforcing and encouraging the natural person.
http://freedomofmind.com/Contact/formFamily.php
Really knowing the person, respecting their individuality and choices, is the key to helping them out. My husband is an emotional attender. None of my logic has had any impact on him at all. The elders, in their bumbling arrogance, have been my best allies. More than once they have brushed him off when he has asked for guidance (i.e. blood) and I have helpfully filled the gap. Hubby has also endured social snubs and rampant gossip, which has nearly pushed him out a couple times.