Firstly, this is an MP5:
It is a 9mm submachine gun designed by the German company Heckler & Koch in the mid 1960s
This is an MP3 Player:
MP3 is a file format for encoding music developed by a team of multinational scientists in the early 1990s.
The continued questioning by the police about the cheese omelet is a standard tactic used by law enforcement to see if the subject being questioned is lying. If over the course of the questioning the subject's story changes, that's a pretty good indicator that the subject is lying.
Yes, Elizabeth told the police her "real" name. However, seeing as no one (besides David and Cheryl Watkins) knows Elizabeth exists, and Ms. Watkins did not file a Missing Person Report (reason for not doing so explained next chapter. DO NOT ASK ME NOW!), she was not giving anything away by doing so.
Okay, now that that's out my system, I've decided to reverse the orders of Chapters 8 and 9. This means that there won't be an update for at least a week, but on the flip side the plot will be advanced much faster. Reason being I'd like to complete the story before the end of January (before I go back to college). After that, I won't have a lot of spare time on my hands so it will be unlikely that I get it finished (before summer anyway).