Quillan Creek and The Little War (Time Stones, #1)

Jessie Mason has troubles enough in her young life. Orphaned and shunned, her aunt has been the one constant in her life. But when her aunt inexplicably disappears, and Jessie discovers her mother's Time Stone, events at the upstate New York children's home lead Jessie into mortal peril.
Her escape is a summons to a world of conflict, upheaval and fear, 250 years in her past, to three unlikely companions, Tip, Kes and Abe, and to the aged shaman, Nishkamich, who promises an education in the powers of the stones which they each possess. Battling disbelief, Jessie reluctantly agrees to remain in the hostile Onondaga village and listen to the shaman’s instruction.
She warms to the strange new life and the growing bond between her unpredictable fellow apprentices. But when Tip and Abe reveal the paths of destruction and violence which brought them to the village, the friends must consider that their stones are being ruthlessly hunted through history.
In frozen forests, their friendship, their wits, and the very limits of their endurance, will be tested by nature’s unforgiving winter and one man’s determination to seize what is theirs.