how is rue a powerful ally and a credible competitor in the games. Give specific reasons

Rue is a female tribute from District 11, the second poorest district in Panem. She is 12 years old and Katniss associates her with Prim. They form an alliance in the Games, and Katniss is emotionally affected by her death, which is a major turning point in the novel. Rue is fast and illusive. She climbs trees and hides effectively. She knows how to use plans and herbs as well as use hard to decipher calls. There is an innocence about Rue that reminds Katniss of her sister Prim. Katniss finds Rue both useful and loyal. Katniss finds comfort in nurturing Rue through this ordeal.