Might I suggest The Happy Prisoner, or even better, The Fancy? Those two stand out in my memory, though I like everything MD has written, with the exception of her later kids’ “horsey” books, which I thought were pretty lame.

Or even the autobiographical first books, One Pair of Hands, One Pair of Feet, and My Turn to Make the Tea. Snarky & very very funny, with poignantly touching bits here & there.