The thing I find odd about the trips is that they are not in a logical sequence and therfore more expensive than needs be. Lets say you live in London and fly to LA for a once in a lifetime visit. Why would you then fly to NYC and back to LA...even adding in a additional stopover in Kansas? All the while paying for two places? Why not fly to LA...then to Kansas...then to NYC as you make your way back to London.
Why a second return airfare to Turkey? This trip does not seem to be in the category of "money is no object." She unnecessarily backtracked when Amersterdam ( much closer to NYC than Turkey) could have been a stopover on the way home...saving money on flights and double rooms.
I haven't checked into these particular flights at all but often it's cheaper to buy tickets in another country than in the U.S. so perhaps she waited until she was in turkey and buying round-trip tickets to these places was less expensive than doing a stopover.
though I do find it slightly odd--mostly because there is so much to see in turkey!