Olivia Goldsmith's novel, Marrying Mom, would probably be a good movie. As a novel, it tried desperately to be funny, but it did not get a single laugh out loud moment from me.
I read somewhere, advice to writers: show me, don't tell me. Marrying Mom was a lot of "tell me's," rather than "show me's."
An example, not from the book, just making something up:
*Jane is the clumsy sister. She is always tripping over her own two feet.
Jane tripped on her shoelace. "Jane, you are always so clumsy," said Mom.
Jane slipped on the throw rug, losing the tray of cookies she was carrying. "Jane, why are you always so clumsy!" Bruce shouts at her.
*Did not need to read that, as the next two instances will show it.
I also got confused by names, Bernard, Bernie, Barney, and who is Susan again? The middle sister, I thought her name was Sarah. or Sharon. Sig, Sigourney?
Rife with stereotypes, again, some "tell me's" could have been eliminated, due to future "show me's."
I lost interest in the story early on, but went back to finish skim-reading it after reading the last two chapters, in order to answer a few questions I had about the story.