The book you are referring to is "The Vanishing Half" by Brit Bennett, and it is indeed available in English.
You can find it at:
* Bookstores: Both online and physical bookstores carry "The Vanishing Half."
* Libraries: Check your local library's catalog to see if they have a copy.
* Online Retailers: Amazon, Barnes & Noble, and other online retailers sell the book.
* E-book formats: You can also purchase the book as an e-book from platforms like Kindle, Kobo, or Nook.
It's important to note that "Die verschwundene Miniatur" is a different book entirely, written in German by Saskia Hennig von Lange. The two books share a similar plot concept (a missing item and secrets in a family), but they are distinct works.