Dorothy Cannell's The Thin Woman mysteries are fun - they're mysteries but they're light and a bit goofy (in a good way)

The Thing About Jane Spring by Sharon Krum

I haven't read any but I've heard good things about Sarah Addison Allen and Marisa De Los Santos.

Madeleine Wickham is Sophie Kinsella, though her books under that name aren't quite as funny. And Hester Browne also writes as Lucy Dillon.

I think you might like Where'd You Go, Bernadette, too.

What Alice Forgot by Liane Moriarty