I've enjoyed some of Jeanne Ray's novels quite a bit. Step Ball Change and Eat Cake come to mind as my favorites by her. I like her humor, the fact that her heroines are older than 23, and that her books are romancey with some thought put into them with interesting characters.
I also read science fiction and came across the concept of a middle aged woman literally becoming invisible in the Laundry Series by Charles Stross. It's a tricky concept- making literal what seems to figuratively happen after a woman's most "attractive" years are past her- in other words, as she gets older. It's a hard one to pull off without any self-pity coming into it.
And I'm not sure it's pulled off here. Although our heroine becomes invisible, her clothes are still visible so I guess her husband and son see her clothes and just assume that she's in them, without noticing that they can't actually see her? Clover, the main character, just waits for them to notice. She doesn't actually point the problem out to them, so really she's complicit in her own problem.
Everyone in this book is just so nice that there's no real conflict to resolve. Clover's husband is a pediatrician, extremely busy and burned out. He really is a nice person, and when Clover lurks about him at work one day, the most poignant thing is that he doesn't come home right away because he decompresses by looking at sailboats on the internet. No secret mistress, bad habits, or anything dark. Clover feels bad that she was upset that he didn't notice her invisibility, because she didn't know just how stressed he was. She also didn't notice just how upset her son was about his failed job searches until she invisibly runs across him in a cafe. Her mid-twenties son has decided to get a tattoo, and Clover can't take it! She invisibly foils him. Apparently her mom voice still works even when she's invisible, so she shames the tattoo artist into not doing the job.
Clover eventually meets up with other invisible women, and they eventually decide to empower themselves by doing good. This involves riding the bus to a middle school and breaking up bullying on the bus, going around the middle school and using mom-voice to stop kids from doing the wrong things.
There's a lot of stuff that doesn't feel thought through. The invisibility is brought on by a certain combination of drugs and cosmetics. I had sort of expected that the moral of the story would be that once these women start making their voices heard, the invisibility would stop. But this really isn't any kind of allegory- nothing the women does changes them back to visible. Their relationships don't seem to really be transformed, either. This sort of robs the story of any thematic power it might have had.
I guess if all you really want from the book is some mildly funny "what if you were invisible?" riffs, you'll be fine. There's nothing really deeper here, and it felt like the book could have been a lot more. Plus- it's not the eighties anymore! Who cares if your grown son gets a tattoo?