Hie there.Congratulations for applying for Canadian citizenship.A couple of questions for you,which is your local CIC office? And you say "we" have you applied for canadian citizenship as a family together with your children or have you sent seperate applications? Your application was classified as non-routine because of a couple of possible reasons: you either travelled oversees so frequently during your PR time or pre-PR time;you had more than one passport and you didnt account for it during your application and didnt submit its biographical pages,you either missed one or a few travels on your application absence declaration and when you calculated your days in Canada leading up to your citizenship application using the residency calculaor,your math came out wrong even if you were well past 1095 days.That absence declaration and residency calculator is the central point of the canadian citizenship application.Anything you miss will lead to years and years upon years of waiting. Are you sure your criminal records are clean? Have you been asked to respond with candian residency proof?? Have you contacted CIC to ask why? And your inerview,if you are able to and dont mind sharing,what questions were asked?? And did they indicate any undertaking action?? I would additionally consider contacting a reputable immigration lawyer who can also assist better .But however,the Canadian gvt is not really serious with its poor approach to CIC.CIC is operationally unable to process any applications from any immigration category because of budget cuts,staff reductions and neglected procedures that are unable to assist in processing applications.So application time frames are increasing and increasing by months on end.Court actions and frankly lucky applicants are the only beneficiaries here.Now im sorry about your mother,i hope she will be ok and though its commendable you have established yourselves here, Cic s operational capabilities are disfunctional and not able to process applications no matter how good an applicant is.You have to be lucky to fall in a jurisdiction where you have serious CIC agents working to get to a decision in a time frame that makes sense .Leaving Canada forban extended period of time could however place your applications in jeopardy,non routine are taking 3 yrs to process,very pathetic indeed,but 3yrs .Leaving for an extended period of time will question the intent to reside clause which is now in effect.So your application could be denied because your extended stay out of canada will be sufficient reason to justify you dont intend to reside in canada during both the application period and after the citizenship is granted if it gets to that decision.This is a very disfunctional department,however those are the rules.Any other questions please dont hesitate to ask,i will try my best to answer you.