hi, i think i can help you with creating her email subaccount. first, you have to log in to your "my verizon" page.. then along left side, click on "profile" https://www.verizon.com/foryourhome/myaccount/ngen/pr/user/profile.aspx may get you there faster....then click on "manage" button to the right of 'manage sub accounts', and finally click on "add new sub account" and fill in the blanks...then click "save".i hope this works for you and your mom....also, i can't help you with the outlook express settings....anyone ?
This should be a good starting point for your mom
I use Outlook 2013...with Windows 7
Good luck...let us know how you make out.