How did Helen Keller's family feel about Annie?

Helen Keller's family was very appreciative of Anne Sullivan for all she did for Helen. Although, according to Kim Nielsen's book The Radical lives of Hellen Keller, there were initially some clashes about the Civil War and slavery between Keller's parents, who were Southerners and former slave owners, and Sullivan, a Northerner. When it came to the crucial issue of Sullivan's teaching Helen, they couldn't have been happier.
Before Sullivan came, Helen was an increasingly angry child, frustrated more and more as she grew older by her inability to communicate, driving her parents almost to desperation. After Sullivan came and was able to teach Helen to communicate and establish a loving relationship with her, the Keller parents were well pleased. Their trust for Sullivan is demonstrated by them taking her advice to send Helen to the Perkins School and allowing Sullivan to accompany their daughter there.