The way I see it, while the 7 year age gap between a 25 year old and 32 year old is not really significant, a 7 year age gap between a 25 year old and 18 year old is. The truth is the two of you are worlds apart in where you are in life, in how you see things in your behaviour and motivations and unfortunately for you I think this will be an uphill battle just to keep things civil.
As for the muslim thing, if her parents find out and if they like you chances are you will have to convert to Islam. Will you be comfortable with doing that?
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~