chinese wife

i am an italian. retired in april and came to spain, bought a house. my wife is chinese (also retired) (married in china and legalized in italy) and is now in china because her father died last year in nov. and she had to help her 83 year old mother. now i want her to come to spain and take residence there where we bought the house. i have my residence in switzerland and have to keep it for the next 2 years. the spanish consulate in shanghai told my wife that she can only come to spain for 6!!! months. and to do this she has to present a form which has to be requested by the local police. is this true or are there other ways to bring her here.? i thought that "recongiungimento familiar" is part of the EU constitution.
thanks