Thanks for your question! Your daughter can definitely do this! The best way to accomplish this is to login to the PayPal account you want to accept donations, then go to this link to manage donation buttons. There you have the option to create an HTML button or just a link/QR code that can be shared with people.
It'll ask you to set up your donation page there, but the "recurring" checkbox will display for any donors that would like to to be recurring.