Final answer:
Keiko and her family were likely in the Minidoka Wartime Relocation Center in Idaho.
Step-by-step explanation:
Keiko and her family were among the 110,000 people of Japanese descent who were forcibly removed from their homes and relocated to internment camps during World War II. The internment camps were located in various states including Arizona, California, Utah, Idaho, Colorado, and Wyoming. Based on the information provided, it is most likely that Keiko and her family were in the Minidoka Wartime Relocation Center in Idaho.