What is the main conflict in Blue Willow by Doris Gates?

Janey Larkin is ten years old when her family arrives in the San Joaquin Valley of California. She is an only child and lives with her father and stepmother, her mother having died years earlier. Janey notices that there is a family across the road and that there's a girl about her age, Lupe Romero. She wants to seek out Lupe's friendship but knows that the Larkin family never stays anywhere long so there probably won't be time to develop a friendship.