This is the third time my mother is visiting us, last 2 times she went back within 6 months of stay. This time we would like to extend her stay. She is planing to visit her daughter in USA soon. She landed on March 2018 this time. So whats our best bet ? Let her go and visit her daughter in USA and while entering back, do Canadian officials allow her to say 6 more months or its better to extend her visitor's visa within Canada. If that's the most sensible option, whats the procedure for the same , Kindly advice ?