I was annoyed by another review for this book basically said "a group of mothers who say wah wah" - so here is a review that may provide a bit more context and depth on this book
different daughters is a product of it's time. it is a collection of mother's writing about their experiences having lesbian daughters. to people in 2022 - this seems normal. in 1987 it was groundbreaking.
the editor speaks of the difficulty of putting this book together and her own mother's struggle to find books and resources to assist her in her own journey of understanding her daughter's lesbianism
with the privilege of the modern internet, it can be easily forgotten that a group of women coming together - some of them anonymously- to share their struggle, confusion, shame, anger, and joy in having lesbian daughters was inaccessible
strong points: diversity in the women involved - different racial, religious, class, and sexual backgrounds. also a difference in where they are in accepting their daughters and their ideas of what "caused" it. highlighting the importance of PFLAG, in many of these stories it possibly saved people's lives
weak points: some outdated ideas of what causes lesbianism (hint: nothing), some stories are repetitive but that may be due to the editor basing them on interviews (which is noted)
in summary, perhaps this book is no longer groundbreaking, nessecarry, or entirely accurate. but because it existed, we are at that point. and reflecting on the changes in 50 years time is amazing.