You can change the word Dashboard to whatever you want.
First, log in as an admin.
Copy or click this web address and change XXXXXX to your library's address
http://XXXXXX.readingbydesign.org/admin/structure/pages/nojs/operation/page-reader_dashboard/handlers/page_reader_dashboard__panel/content?destination=reader-dashboard
Type the wording you want into the (currently blank) Title field in this location, as shown.
Click the"Update and Save" button. You should see the new wording on your page.