also-somehow I didn't get that Bella's self esteem is bad. She doesn't feel worthy of edward because of the depth of her love and awe for him...but she doesn't worry about what people think about her. ISFJ's can be very nuturing of others and overly critical of themselves. On a scale I'd say she's not a super S-maybe a little closer to center...but I still think ISFJ.
where did istj come up for edward? No way. No way. He's clear-he's not that complicated. Bella is much more complicated.
Renee is definatly a ENFP-I don't think anyone has even tried to argue that. She's classic.