determined-she worked to overcome great odds 
independent-she wrote and became successful by herself 
smart-how many people could acheive what she did with the limitations that she had? 
loyal-she was loyal to her family and to her teacher 
hope that helps, and I hope you read the book.

Helen is a very expressive person and once she learns how to communicate, she is tireless in her efforts to learn as much as she can. She is intuitive and very demanding of others but she finds joy in the simplest things and shows appreciation through her acceptance and remarkable development. She is trusting and loving. Her high expectations do result in disappointments and one of her greatest regrets is after she unwittingly plagiarizes The Frost Fairies by Miss Margaret T. Canby which affects her confidence and belief in herself and after which her relationship with the beloved Mr Anagnos is irreparably damaged.