Start with high-confidence stepfamilies books, then narrow by subgenre or adjacent topics.
Honeybee
Naomi Shihab Nye
Families, Families, Families!
Suzanne Lang
Family Is Family
Melissa Marr
The Great Big Book of Families
Mary Hoffman
Siblings
James J. Crist, Elizabeth Verdick
Families of a Feather
Fern Wexler
We Are Family
Patricia Hegarty
We Need to Talk About Divorce
Kate Scharff
