I did finally come accross what was a tiny paragraph about homosexuality, and yep she did mention something about it being "caused" by mothering/parenting, but honestly i won't hold that against her. I'd say it was more a case of it being 1975 when homosexuality was seen in a negative light and theories on the "cause" were varied (i've read a lot of bizarre things, even that it was considered an illness until recent years). I'm not sure why she chose to include that, it's not really relevant.
Thanks for letting us know- your opinion on it sounds quite right and makes me feel more comfortable about it. I need to read this book when I start having a life and reading again