After playing the game, I have some suggestions that could prove the game.
1) First of all the character looks 35+, which can be a good thing.
2) So it can be like she worked for 10 years in TV sector. But during all these years, she couldn't make a name for herself despite working hard. She is dissatisfied with the outcome and realises that she needs a career change. She was always into detective novels, true journalist stories and always had the hunger to bring the truth. She also had a viewpoint about every aspects of society. This prompts her to take up a investigate journalist role. All these factors brings a justification to the fact that she is ready to do anything to bring the justice and make a name for herself. This also brings motive to her actions and some personality of her own.
3) Also I think that every man in an adult game should not be some perverted guy. I really liked Mr. Parker as he was a brilliant journalist in his time, which made Jessica to idol him until the scene where he just becomes a perverted guy. I mean that should literally kill Jessica right there as it destroys her values and ethics. Basically you could have made Mr. Parker as some kind of mentor which will guide her throughout the game. I mean with all the experience and connections that he got, he can provide some advice and hints on some missions. That means by befriending him, Jessica can utilise his connections and experience which can be very well handy. This also explains the fact that she is willing to get out of her comfort zone and pursue new paths to uncover justice.
As said these are my opinion.