I don't find NG's actions suspicious, although I don't rule out that someone she knows got info from her about the families' daily activities. I think she could have unwittingly facilitated this crime, with no knowledge of the plans. I also believe that she is speaking out because she feels terrible about what happened. Most likely, she loved the Savapouloses as if they were family. Likewise, Vera, the other housekeeper. She thought highly enough of her to get her a job with this really nice family, which speaks for itself.
I also don't think she's changing her story, it's just that more is coming out. I think she feels god-awful about what's happened and is purging her soul of all the ugliness that has been invading her mind since learning of the crime, as more and more things start coming together for her. Imagine how you would feel if you missed the "clues" Savvas was desperately (yet delicately) trying to convey? Then add in the language barrier. She is probably kicking herself as she realizes how many vaguely coded messages he gave her which she failed to see the importance of at the time. She has probably gone over that 24-hour period in her mind over and over again in the past few days, wondering what she could have done differently.
Also, if she were truly guilty of anything (more than perhaps speaking too freely about the family to people whom she shouldn't have trusted), she would have lawyered up by now. I think it's reasonable to believe that the police have ruled her out.
I can only imagine how hurtful it is for her to have utter strangers accusing her of somehow being an accomplice. Even if it turns out that there is a link between her and the killer(s), I am certain that she knew nothing about the crime in advance.
JMO
I also don't think she's changing her story, it's just that more is coming out. I think she feels god-awful about what's happened and is purging her soul of all the ugliness that has been invading her mind since learning of the crime, as more and more things start coming together for her. Imagine how you would feel if you missed the "clues" Savvas was desperately (yet delicately) trying to convey? Then add in the language barrier. She is probably kicking herself as she realizes how many vaguely coded messages he gave her which she failed to see the importance of at the time. She has probably gone over that 24-hour period in her mind over and over again in the past few days, wondering what she could have done differently.
Also, if she were truly guilty of anything (more than perhaps speaking too freely about the family to people whom she shouldn't have trusted), she would have lawyered up by now. I think it's reasonable to believe that the police have ruled her out.
I can only imagine how hurtful it is for her to have utter strangers accusing her of somehow being an accomplice. Even if it turns out that there is a link between her and the killer(s), I am certain that she knew nothing about the crime in advance.
JMO