First take a deep breath and act coolly. Neither yourself nor your advocate is in anyway impending danger. The offence that can be alleged is "abetment of suicide". Firstly, Indian police and criminal courts cannot take cognizance of this case, as it happened beyond the territories of India. Next, in abetment of suicide cases, direct relation attributable to the suicide act and its abetment has to be proved. A mere suicidal note from the deceased abroad will not prove the offence of abetment. A strong action from your side has to be proved to drive point home. Filing a civil or criminal case by a wife provokes husband to take drastic step, then the wife cannot be foisted with the allegation of abetment of suicide. So, as an abundant precaution, take anticipatory bail and keep yourself calm. Nothing is going to happen.