Clicking on the button will take you to the Paypal website where you will need to log into your Paypal account to confirm the payment. If you do not have a Paypal account then you can set one up via an option on the Paypal website. All information is securely processed by Paypal, not by this website.
You do not have to use this form. You can simply log into your Paypal account and make the required payment to annabelmilne@hotmail.com. This achieves the same thing as using the form.

Please note that if you do not have a Paypal account you can still use Paypal to pay using your debit/credit card.