Donation Form and Paypal

I created a donation form for my client. I put the credit card information in the form and when the form is submitted it goes to Paypal and the same process has to be done again. The issue here is we are not sure if the donor thinks they are paying twice because we have had several not go through to Paypal, but they are coming through the form as donations with the amounts. We have tested and we know that Paypal is working correctly.

Is there a way to not go directly to Paypal to complete the transaction?

I did remove the credit card info from the form, but the issue with that is that an automatic “thank you” email goes to the donor, and if they do not complete the Paypal part they will still get the email. Ideally we’d like to be able to send a thank you directly from Paypal but you can’t.

Any advice would be appreciated.