you are male or female?

your feeling is understandable.

however,

please face the reality:

mom passed away, dad should live for 5 to 15 years,

if anybody can help dad to be LESS lonely and

MORE happily, it is a BIG help to you and your big brother,

especially if you are a female, you don't understand

an old man's real need!!!

if I were you, encourage dad get married with this woman

and come to canada together, let him enjoy his life for a little while.