simple google "canada survivor benefits after remarriage"

告訴你們朋友要到本地去找協助單位，這種簡單問題他們都是知道的。不要問東問西非專業人，可能會耽誤事情。

https://www.canada.ca/en/services/benefits/publicpensions/cpp/cpp-survivor-pension.html

The Canada Pension Plan (CPP) survivor's pension is a monthly payment paid to the legal spouse or common-law partner of the deceased contributor

....

If you remarry

Your pension will continue even if you remarry.