So do you think that she left on her own? Or that BW had something to do with it? Just trying to see where you're coming from. Personally I was hugely suspicious of BW at first, but he seems to have been pretty much cleared. Just my opinion of course.
I know this wasn't directed towards me, but I don't think Brettly is involved.
I think that in the past, maybe she wasn't that reliable about coming home on time or being at family events. Maybe she drinks a little bit more than people have let on? Maybe she has a "secret" boyfriend that isn't a good guy.
I can see a family insisting their daughter was reliable and trustworthy and would never do this so that LE would actually take it seriously and not just think she disappeared on her own.