Good Keto cookbook?

I’m looking for a good keto cookbook for my teenage niece. Apparently she likes to cook and is interested in keto. I don’t know much about the topic and am hoping that I can get some suggestions from all of you. Thanks!

Here’s a response from the Facebook page of this site:

Susan Charlip: Great choice: http://mariamindbodyhealth.com/30-day-ketogenic-cleanse/

Thanks. I’m not on FB so I didn’t see it. We ended up getting her Keto Comfort Foods by Maria Emmerich. She seemed pleased, and the recipes sounded pretty good…