After mistressploppy's thread, and bookmum08's help, I need a book hunt too! I read it in my college library, forgot to take it out, and never found it again. This was early 2000s.
It's about four sisters and their parents. One wears thick glasses, one gets pregnant at 15 and one knits compulsively. I think it's set in the 50s or 60s.
The only quotes/bits of content I can remember are ones that stood out as quite shocking to me:
The older sister does a 'clumsy striptease' for her bf, apparently blinking lots because she's taken her glasses off.
The 15yo follows a guy home ("her sandals slapped on the pavement") and he forces himself on her. The narrator talks about seeing a hammer on the windowsill while it's happening. When she gives birth, it says "she was never very good at screaming" so she whimpers.
There might also be a grandmother in the house, and the father doesn't seem to be able to cope with being surrounded by women.
Any ideas??