How much does a 60g tank cost there?
Around here we can get a 55g for 1 dollar a gallon at certain times of the year in lfs's. And I would bet it would cost more than 60 bucks to ship.
The longest thing i have ever shipped is a fishing pole in a 5" dia cardboard tube that was 5.5' in length thru usps and that costs around 30 bucks. So you can imagine what the shear bulk size of a rectangular box would do to that price.
Maybe try to find a LFS around your aunt and buy a gift certificate over the phone for a tank set up, for her?