Grace Livingston Hill 
Head of the House [EPUB ebook] 

When tragedy befalls the Graeme family, young Jennifer suddenly finds herself in the position of head of the house over her six younger brothers and sisters. When she overhears her relatives making plans to take over the family estate and split her family up, Jennifer decides it is time to act. They must run away!
Finally, hidden from prying relatives and strangers in a small cottage in the mountains, Jennifer and her family seem to be safe—until disaster strikes! One of the youngest children gets lost in the forest, and another falls dangerously ill. But, miraculously, in the midst of fear and despair, Jennifer finds the true source of strength—and an unexpected love.