Her sister has even gotten to the point of saying that maybe we should either kidnap her and take her away and having her deprogrammed or something similar to an intervention. I don't know if this is the way to go, but we are going to have to do something.
Bells; if it seems this ovious to the rest of you, that group she belongs to sounds too much like a cult, considering that most cult's are religious based, this seems to be the case. Sometimes this is the only alternative.
The lack of nutrition also makes for weak minds, if she's not doing nothing to feed herself properly she can't think straight. This is one of the techniques used by cults. Perhaps she's been told meat, and poultry are evil foods or something.
(speculating)
Speaking in toungues could also be associated with the beggining stages of schizophrenia. Glossolalia, is the term used in psychological encyclopedias for this behavior.
see it here
So lack of nutrition, heavy religious zeal, lack of interest to do anything else other than be with new friends who are zealots themselves, even shun family members, for the "group" Yea she's brain washed, and she's part of a cult. Perhaps you would want to refer Leo to this type of behavior of Marian Catholicism, he does not seem to be part of some religious cult, though the guy claims to have visions, and dreams, this normal for him. A cult member wouldn't be hanging around a forum like this one.
Godless.