She said, "We're detectives" in the tone of voice that someone might say, "Making you happy isn't making me happy" - Daniel Handler

All four of them have completely abandoned one another.

Of all the ridiculous expressions people use--and people use a great many ridiculous expressions--one of the most ridiculous is "No news is good news." "No news is good news" simply means that if you don't hear from someone, everything is probably fine, and you can see at once why this expression makes such little sense because everything being fine is only one of many, many reasons why someone may not contact you. Perhaps they are tied up. Maybe they are surrounded by fierce weasels, or perhaps they are wedged tightly between two refrigerators and cannot get themselves out. The expression might as well be changed to "no news is bad news," except that people may not be able to contact you because they have just been crowned king or are competing in a gymnastics tournament. The point is that there is no way to know why someone has not contacted you until they contact you and explain themselves. For this reason, the sensible expression would be "no news is no news," except that it is so obvious that it is hardly an expression at all.

"A man of my acquaintance once wrote a poem called "The Road Less Traveled", describing a journey he took through the woods along a path most travelers never used. The poet found that the road less traveled was peaceful but quite lonely, and he was probably a bit nervous as he went along, because if anything happened on the road less traveled, the other travelers would be on the road more frequently traveled and so couldn't hear him as he cried for help. Sure enough, that poet is dead."