Hi kitten,
Well.... I dont know... wish I was a professional on this, but sadly Im not... however, consider she might need medical care...
I mean, this doesnt sound like "just" a person who likes to lie... maybe, she is the first one to believe things happen to her... what if she really sees this man in her mind, imagination or whatever you call it ?? Schizophrenic-like you know...
It can be from a psychological problem to a severe psychiatric one...
If you appreciate her, try to tell her she needs help... Doesnt look like just a "lier"... to me... just my humble opinion.