I have it, but haven't read it yet. I really must.
One of last month's was The Shock of the Fall by Nathan Filer. I found that really tough going, I had to read parts, then dip in elsewhere, then go somewhere else. I really don't seem to cope with gritty family traumas and mental illness very well. I want uplifting and educational and inspiring! I think there's enough misery going on with my own family and friends without adding to it in book form. But as you say, Book Club makes us read things we wouldn't normally touch with a bargepole. Which is a good thing.
However some people do take your criticism of their favourite books very personally so I find it hard to be as rude as I would like about some choices!
The other choice though, The Snow Child, was lovely, even though it too could have been very sad. I would recommend that one, it's beautiful.