I would download it from one and then download itto the other one.
You can put it on another pc as long as you own both of them download it get the key and then download the other one
I just went o a staples or some where that has a deal on it and get the disc that way you can reload anytime you want
I have found it pricew wise within 2.00 of what the own line price is
why not use her laptop for details as well
I find it not as usr friendly when driving due to sunlight shining on the screen but it is nice to use to work with a standalone GPS
I do us ethe Gps with this but like a standalone as well