A few years ago, I had a "cosy mystery phase". I discovered Amelia Peabody at that time, but didn't read it until a few years later. 
 I have to say, I found Amelia to be absolutely delightful as a character. She's no-nonsense and believes in practicality over emotions (that isn't to say she doesn't feel emotions, as she does; she's just very good at compartmentalising them when necessary.) 
 The mystery presented is good, but Amelia is the one that makes the unravelling of the mystery itself fabulous.