Yes, Debbie's reason
Though Debbie's parents really sincerely loved her and cared of it, she did not feel this love.
Yes, Debbie's reason all understood and never would tell nobody that they do not love her.
But the live feeling and the warm attitude towards itself it lacked the most important.
To understand this situation not easy because Debbie's parents loved the daughter and tried as soon as could provide it to all necessary.
Batten used all knowledge which is available for them and listened to a practical advice of experts..