Судя по отношениям с родителями, он

Судя по отношениям с родителями, она показалась учителю трудным ребенком

Results (English) 1:

Judging by the relations with her parents, she seemed a difficult child teacher

Results (English) 2:

Judging from the relationship with the parents, the teacher, it seemed difficult child

Results (English) 3:

according to the relationship with parents, she seemed troubled child teacher