The White Darkness- Main Characters, Setting, and Conflict

For My Summer Reading Project I decided to read The White Darkness. The Award winner written by Geraldine McCaughrean. I am currently about half way through the book.

Main Characters-
Symone is a teen, my age, goes by Sym. Her dead father's business partner, 'uncle' Victor, controls her entire life. Sym happens to be almost completley deaf. Sym is clever, shy, withdrawn, and insecure. She gets very anxious about not being accepted in her peer group. At first she goes to follow her 'uncle' as the Parental Guidence in her life until she finds out he is not trustworthy; begining to make her own judgments and saves herself by her own efforts.
Victor Briggs is in his 40's. He is convinced that hes always right and everyone is is plain stupid. He refers to the theory of "Symme's Hole" and is convinced he can prove it. He will travel to the South Pole and discover the entrance to the "Inner World". Though at first he comes across as being a little ridiculous, he becomes more sinister throughout the pages. He will clearly let nothing stand in the way of his project and gaining all fame.
Titus is Sym’s imaginary friend. Created from her knowledge of the Antarctic explorer 'Titus' Oates. He is emotional, honest, supportive, and a willing to listen male. He is basically her want to self. What he talls her makes her compare it with reality. Eventually frees herself from the deceptions imposed on her by others. Mainly by her ‘Uncle’ Victor, Manfred Bruch and his ‘son’, Sigurd.
Manfred and Sigurd Bruch: These men are a father-son-team traveling with Victor and Sym. Manfred Bruch a film-maker but really consists of the secret identity of being a conman with the intent on fleecing Victor through a horrible belief in his theory; Sigurd is a young actor paid to pretend to be his son.

Setting- The story is based off of the voyage of Antartica to find the entrance of the inner earth.

Conflict-
Deception and abuse are the main Conflicts. Victor has been abusing Sym almost from birth till now, brainwashing to believe his own beliefs as the only possible reality, creating his own little robot. Victor maintained control by heartlessly dividing her from parents and peers, planning her future to suit his own wants and needs. Bruch and Sigurd attempt to con Briggs but ended up conning themselves when their mark turns out to be a psychotic fantasist. Lastly Sym has to face up to her beloved Titus being only a creature of her own imagination, a response to her desperate need.

I want ask one question, is Symone in for a deathly adventure or am I jumping to conclusions??