language is quiete important....my ex after living 25 years in austria would not be able to speak much ...she always was working ( as she claimed ) but in jobs where she only did manual work with little speaking...most her colleagues where people from outside of austria etc.....and her thai also was not really good ( she only could write very slowly )...I ignored all that and thought she understand me when I speak...because I had the impression she is good in understanding because she always confirmed what I said...after all she did only understadn abou 20% of what i said and only was good in displaying abehavior that made me think that she is understanding...where she did not...