The female alpha

Lexy Chains, a eighteen year old kid. takes over the passion as alpha of the pack. After they got attack by rogues and their territory was set on fire. The only persons she got left is Emma, the beta's daughter, Thomas, a very good friend of the pack and her little sister, Tess. The four of them have no other place to go and are getting offered a place to live in a nearby pack. Every thing is well until every thing turns and the other alphas turn against her. Is it because she is a female or has her pack something to do with it.