A Google Scholar search  or Gernsheim displays items written by:

Elizabeth Beck-Gernsheim
Institute fur Soziologie der Universitat Hamburg
Allende-Platz 1, D-2000 Hamburg 13
[This address may not be current. See a later address below.]

She has been publishing articles since the 1970s, so she is not a young woman.

Published in April 2002 she wrote:
Was Kommt Nach Der Familie? Einblicke in neue Lebensformen 
(What comes after the family?)You can read it online in German at http://www.forschungsnetzwerk.at/downloadpub/Familie.pdf

In 1997 she wrote a book that was republished by Verlag C. H. Beck in 2006 ...
so she may be related to the founder of this publishing company.  
Die Kinderfrage heute: Uber Frauenleben, Geburtenruckgang und Kinderwunsch
https://doc1.bibliothek.li/aar/FLMA150950.pdf
You can see a preview of this book at
https://books.google.co.il/books?hl=en&lr=&id=bRc68AswkgwC&oi=fnd&pg=PA7&dq=Gernsheim&ots=2xD5EaR4QK&sig=3y81uGW3lZEqnZcrSRMrLdNCWgk&redir_esc=y#v=onepage&q=Gernsheim&f=false

and

Türkische Bräute und die Migrationsdebatte in Deutschland
(Turkish brides and the migration debate in Germany)
https://www.ssoar.info/ssoar/handle/document/20180

She wrote an English article in 2007:
Transnational lives, transnational marriages: a review of the evidence from migrant communities in Europe
https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1471-0374.2007.00169.x?casa_token=guMMhfi5hqcAAAAA%3Aknl_iF5gNfCa9XXLSUkgLQLIWl5WvGj4URfY2j7bZhWK9ixOCi3kwMtsMOJwIJGemWWoQEvfaek4

She wrote a book with a similar title published in 2010:
Was kommt nach der Familie? alte Leitbilder und neue Lebensformen
https://scholar.google.com/scholar?start=70&q=Gernsheim&hl=en&as_sdt=0,5

She wrote this book in 2011
Lebensformen im globalen Zeitalter: Fernliebe
https://books.google.co.il/books?hl=en&lr=&id=uus7CgAAQBAJ&oi=fnd&pg=PT6&dq=Gernsheim&ots=gB86ayWEP6&sig=BZ1-C2y_g3ooclBYo_4UvXf_Ag0&redir_esc=y#v=onepage&q=Gernsheim&f=false

She contributed an article, Wer heilt hat Recht?, in a book published by Springer in 2013. In that book her affiliation is listed as:
Prof. Elisabeth Beck-Gernsheim, Universitat Erlangen-Nurnberg
Kochstrasse 4, 91054 Erlangen
https://scholar.google.com/scholar?start=80&q=Gernsheim&hl=en&as_sdt=0,5
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There is a book in English authored by Helmut Gerensheim & Alison Gernsheim 
published by Fountain Press in London in 1948
L.J.M.Daguerre: The History of the Diorama and the Daguerreotype
https://pdfs.semanticscholar.org/f368/c54bcf57de855f7c06df39ad57308154338a.pdf

Helmut also wrote this book: A Concise History of Photography
A 3rd revised edition was published by Dover Publications, Inc in NY in 1985
The 1st edition was published in 1965
https://books.google.co.il/books?hl=en&lr=&id=GDSRJQ3BZ5EC&oi=fnd&pg=PA3&dq=gernsheim+concise+history&ots=hTqcuhYCI1&sig=UO4QjcwSKP-KLJ8Wpsc6rqnZqEY&redir_esc=y#v=onepage&q=gernsheim%20concise%20history&f=false