She changed her story so not everything she said can be true at the same time. IMO. But it is possible that she had some an excellent reason to make up lies that make her look like a bad, drunk caregiver when in fact she was completely sober and took excellent care of the children and didn't neglect them in the least. I can't think of one but it doesn't mean there isn't any.
I am actually not convinced she was drunkIt might have been a cover story to explain the gaps in the timeline she said she had. (Of course, that is provided that we believe her when she says so.) So sorry, I just realized I don't remember because I was so drunk...
When did she say she didn't know when JI was coming home? I thought it came from a lawyer but I don't remember hearing her saying so. I think it's quite possible she didn't know, FWIW.
Anyway, it doesn't matter if she knew or not, imo. It only makes a difference if she had planned to do away with Lisa but if something unforeseen happened in a drunken fog knowing or not knowing JI's work schedule would not have stopped it from happening.
I don't know if she failed a poly or not and I think it's possible that DB doesn't know either. I do believe the police told her she did because again, I can't figure out any reason why she'd have told the media she failed if she hadn't been told so. But I don't think she's an expert on polygraphs so she would probably just have believed what the police said. Which may or may not be true.
What I'm getting as is if you think she's lying, well obviously she's doing that because she's guilty, end of story. Anything else she says you can put anything factual on it.
It's when you start believing certain things she's saying (presumably negative in this case) but not others. Thus, saying she failed the poly as a fact, when in reality no one else had said this except her. She said she was drinking and blacked out. Well, she bought a box of wine she I'll agree that she's drinking, but not blacked out.
As far as her changing her story, didn't the only thing that change was the time she checked on BL? One thing?