How do you permanently delete the user account associated with Quicken Membership?

I am the executor for my mother's estate. She had a Quicken account for her finances using her email address and a unique password, and I recently archived all of her Quicken data as I now consider the estate settled.

However, her email account (which I continue to monitor) is now receiving email from Quicken to renew her membership for a product no longer in use. This reminded me that her Quicken membership account is still active, and I want to permanently delete it.

I can't find anything on the quicken.com/my-account page or in the Privacy page or the FAQ about how to permanently delete a Quicken membership account. Anyone know how to do this?

Thanks.