Thanks for the replies.
I am happy I chose for the option to buy another ticket. It was a waste of money and more important: waste of a valuable business class ticket. But anyway, I calmed down and try to forget it.
Indeed lesson learned for her and lesson learned for me to use my miles for myself in future, unless we travel together.
I will be flying tomorrow to TPE, but on a paid ticket in Y with KLM. See, I am a too sweet husband, to spend my miles for a ticket in C for my wife and travelling in Y myself...
