After the death of her husband- Prim's and Katniss's father- She went into a depression that was very hard to live with. She wouldn't eat, she would just lay in bed all day. Katniss took it upon herself to provide for her family and take care of Prim.
Katniss lives with her mother and little sister, Prim.
I think that for the Everdeen family, they have all gone through a lot of change. For example, in Catching Fire Katniss' mother and sister have endured without Katniss' game to eat, but they are still starving as well as the rest of District 12.
Katniss's sister, Prim takes after her, she has blonde hair and blue eyes. Katniss said that she was told her mother was beautiful once. Years of living in the Seam have taken away her beauty.
Katniss does (Katniss is Primrose's sister)
I think you must mean"what does her mother promise Katniss" because after her fathers death, her mother became ill and depressed. Katniss didnt want that to happen again epsecially if her mother is the only one left to really take care of Prim (Katniss' sister)
Katniss have her sister Prim a goat.
Katniss's mother and sister Prim heal the wounds
At the very end of the chapter when the name of the girl tribute is called Katniss' sister Prim is called. Katniss is shocked, and in the very beginign of chapter 2 she volunteers herself as a tribute in replacement of her sister.
Although Katniss loves her mother, she feels deeply betrayed by her and cannot trust her because she abandoned them after her father died and left eleven year old Katniss to fend for herself and feed her little sister Prim, who was seven.
Archery and hunting to feed her mother and younger sister after her father died in a mine explosion
Her mother and her sister, Prim. Her father died before the events of the series in a mining explosion.
Katniss took care of Prim because their mother was too depressed to care care of her.