Don't you hate it when a book title has already been used?

You're right Rosemary ..

I got a freebie copy of Girl on a Train by A. J. Waines last year, but looking at GR it was initially published in 2013 .. Paula Hawkins didn't have her The Girl published until 2 years later ..

So should Ms Hawkins have been asked to use an alternative title ?? You could argue from both camps .. I suppose you can call your Book / Artwork / Child whatever you want ..

There must be lots of books published first that gain popularity due to their later published similar namesakes .. Equally, you'd be a fool to title your book something like 'Murder on the Orient Express' .. 

And the publishers put different titles to the same book for different countries. 

Here's a quote from the late,  great Reginald Hill:

RH: My American publishers have changed both of the last two D&P titles. (Death Comes For The Fat Man appeared in the UK as The Death of Dalziel.) The argument in both cases was the American readers would have difficulty with my original titles. In the first case because they don’t know who Dalziel is or can’t pronounce his name anyway, in the second because they may be unfamiliar with the works of Sir Thomas Browne. I had no such concerns in either case. Indeed I felt the argument was certainly patronising and bordered on being offensive! But, let me repeat, this is what American sales “experts” were saying about their own people, so if you feel patronised or offended, they’re the ones you should write to! Why did I go along with them? Because they claim to be expert, and because I’ve always felt if you have a dog, you don’t bark yourself! On reflection, I think I was wrong, and from now on I’m going to be barking.