Not going to work (At least there is a high % chance it won't).
Her being a minor aside you are forgetting that she is still a child, physically, emotionally and mentally. As such she will be, do and act as a child. So, i envision her being confused and not knowing what she wants will be very high on the agenda...
Also, no matter what happens between the two of you, you are the one who will always get the blame!
Don't cry, don't regret and don't blame
Weak find the whip, willing find freedom
Towards the sun, carry your name
In warm hands you are given
Ask the wind for the way
Uncertainty's gone, your path will unravel
Accept all as it is and do not blame
God or the Devil
~Born to Live - Mavrik~