HOW DO YOU DEAL!?!?!?

WITH GIRLS!! they are soo freakin dramatic, ill put it as simple as i can. my friend (natasha) has another friend (shayla) and shayla hates me!! and the only reason why is because natasha is my friend as well. what in the hell do i do to get her off my a$$!! she is constantly a ******!! its getting me crazy! i hate girl drama, its soo stupid!! she torments me. she glares at me. she talks to me on yahoo for hell sakes. i dont even know how she got my email! shes obsessive of making my life a living hell! Please HELP!!!