Caught In Between The Alpha and Beta

Gwen, a human girl who is hated and not wanted by her family gets transported to an another world by a witch.
In this world, she finds out that human beings are given abilities to shape shift into wolves and more importantly, herself in alternate universe,is Elena (her doppelganger) the alpha, Raphael mate and Elena is missing.
She pretends to be Elena, with the help of the beta, Lucas 
But what happens when Lucas starts to fall in love with her knowing that she already belongs to alpha Raphael. 
Who will she choose?