She, Myself and I

Her body is intact, but her brain is dead. I have essentially the opposite problem.
Eighteen-year-old Rosa is on the verge of the greatest change of her life. Her nerve disease is slowly killing her so when a doctor from Boston chooses her as a candidate for an experimental brain transplant, she and her family move from London in search of a miracle. Sylvia - a girl from Massachusetts - is brain dead after having fallen into a frozen lake and her parents have agreed to donate her body to give Rosa a new life. It's Rosa's only chance of life but as the operation draws near she obsesses over the idea of what it will feel like to be a real life Frankenstein.
The operation is followed by months of rehabilitation. Longing to escape the confines of the hospital, Rosa escapes to the hospital park, where she meets Joe. As they start to fall in love Rosa is haunted by the idea that he doesn't see her for who she is. When Joe offers to drive her anywhere she needs, they head towards the frozen lake. Can Rosa find closure, and figure out who she really is?