Hi there-I didn't see anything about Amazon, but regardless-I'd say this:
Her "Done for you services" on Gumroad are new, so I'd expect that there are not going to be tons of reviews.
Abena & I have both followed each other for a while, and she's been responsive and helpful; In the past couple of years, she hasn't given me a reason to believe there's a red flag (I did go through and look at some of her other work and what she claims on Medium about creating content sites in other niches, etc. is true/I've been able to find her other work).
*If you feel hesitant, I'd actually buy the Gumroad blueprint course which is much, much cheaper. There's another writer on this platform (Jenn Leach....Jenn is awesome and I'd recommend following her as well), but Jenn gave a very honest review (the feedback in general was good), but you can read her full review here: