Ravenous

very eager or greedy for food, satisfaction, or gratification; very hungry

adjective

http://www.merriam-webster.com/dictionary/ravenous

“Stella was ravenous. Her knees were tumors on sticks, her elbows chicken bones.

Stella was famished.” pg 2299 first paragraph

I understood that Stella looked like a wild creature compared to her mom and her sister.