I have read it but it has been quite a while. She mostly focuses on the DDR, with other data mostly from the Eastern Bloc and USSR. This is a combination of those are the regions she had focused on in her previous work (rather than Cuba, China, Vietnam, etc.) and with Germany in particular, she felt that the data was much more compelling, in that she started researching this after finding studies where the same questions and methodology was being used in both Germanies, there are similar studies that showed a much smaller difference when it was a unified country, and since it is all "culturally similar" being all german, liberals couldn't vaguely hand wave away with pre-existing "cultural differences".

But that is a good summary of the underlying argument. It is that the "social safety nets" to put it in Dem Soc language allows a woman to leave a bad relationship, even to the point of being a single mother, without risk of homelessness or starvation. She even uses a lot of personal anecdotes about solidly middle class/professional class women in the US having to accept power dynamic shifts after deciding that it would make financial sense for her to be a stay-at-home mother and how the fact that she is financially dependent on her husband and has less employment options upon re-entering the workforce after a long time starts skewing the relationship. Even if her husband isn't consciously trying to take advantage of that shift.

And yes, the other part is the ability to be more discriminating with partners, because the reduced need for a male partner for financial security and a second income. She also pulls out a lot of anecdotes of Western men that traveled to the Eastern Bloc complaining that the security and independence of women meant that they weren't as able to get dates and relationships by throwing money around, but had to be interesting and considerate partners.

Nice, that makes sense.