The Abominables
The Abominables is a children's novel by Eva Ibbotson, published after her death, in 2012. Accordingtojng to WorldCat, the book is in 1031 libraries as of November, 2014. [1]
Plot
Lady Agatha, the daughter of an aristocratic explorer is kidnapped by Yetis in 1912. She realises they are gentle. She teaches them to speak, and cares for them. A hundred years pasts, and Lady Agatha is still alive.