Please make sure you have familiarised yourself with the benefits of buying a JR rail pass before you travel to Japan.
It is a ticket only available to non-Japan residents and cannot be bought in Japan.
From memory it comes out at around 30,000 yen for 7 days unlimited travel on JR trains. It doesn’t cover the premium Nozomi bullet trains, instead you can use the slightly slower Hikari trains (adding an extra 20-30 minutes for the Kyoto-Tokyo trip). If your daughter is working when you go and visit her, this pass will allow you to make easy day trips to places like Himeji castle, Okayama/Kurashiki and Hiroshima (and the trip from Tokyo-NRT) for no additional expense to the Kyoto-Tokyo return rail fare.
Its discussed at length in this forum, a simple search should yield plenty of info.