Board Thread:Speculation House/@comment-71.84.15.225-20150807131522/@comment-26397825-20150919212054

Sometimes wasting time can refer to doing something unimportant while you wait for something to come along - like browsing google while waiting for work to start or cleaning while waiting for someone to come over. Techinically you are wasting time, but I wouldn't say either of those are in vain, as they're just techniques we use to make the time pass quicker.

Wasting your life in vain usually indicates death, though sometimes it can mean doing something that was meant to be good and no one continues after you have stopped, or they just ignore what you have done, which then makes it 'in vain'. Or trying to do something and someone comes along and undoes it literally a minute later, which is wasting your time in vain. On a larger scale, slogging through something because you think it will help people which takes a sizable chunk of time can be referred to as wasting your life in vain if the people you are trying to help undo it, don't use what you have done in favour of the old system or just plain ignore it.

I personally am of the opinion that "waste your life in vain" in this context means she dies, but if she's talking about a long term thing which will be for nothing at the end of it, like being a Hunter might end up being, then it would be classed under the 'wasting your time' category.