Interesting topic!
I saw you post about this in the writers guild too, and you state that a part of you worry that this could incite lust. Let me put it this way; if you notice that you start to fancy this character yourself, it's more than reasonable to assume that some people among the audience would feel the same way.
Another interesting question is about fiction in general. A few generations ago preachers would urge people to stay away from fiction, yet today Christians assume that fiction is (mostly) harmless. This is in marked contrast to what protestant preachers said a few generations ago. See for instance what the famous teacher Spurgeon said about novels:
"How many young people there are whose hearts are just a road along which thoughts of levity and desires for amusement are continually going! How many precious hours are wasted over the novels of the day! I think that one of the worst enemies of the Gospel of Christ, at the present time, is to be found in the fiction of the day. People get these worthless books and sit, and sit—forgetful of the duties of this world and of all that relates to the world to come—just losing themselves in the story of the hero or heroine. I have seen them shedding tears over things that never happened, as if there were not enough real sorrows in the world for us to grieve over! So these feet of fictitious personages, these feet of foolish frivolities, these feet of mere nonsense, or worse, keep traversing the hearts of men and making them hard so that the Gospel cannot enter."
- C. H. Spurgeon