In this scene of "The secret diary of a call girl" the non diegetic music shows that the main character, who is played by billie piper, who is a normal girl but also a prostitute. it is sexualised when she is on the screen but the music stops when it shows the disabled boy. When the music stops and shows the disabled boy, it shows that he is unattractive because of who the music stops when they show him. This could be seen as discrimination which shows support for the Evans theory, "Disable people are seen as childish, dependant and underdeveloped and are regrading as 'other' and are punished by being excluded from ordinary life. Thus popular images and rhetoric of disabled people abound which comfort us with people who are imperfect, helpless, unattractive, disgusting, shitty, dribbling." This shows that she is used as a sex object and that is what  the audience wants to get as a vibe. The diegetic sounds that are used in the scene are the Dialogue and the sounds that the dad hears in theban when he leaves. The dialogue that is used by Belle, is that she is speaking to him like he is about 2 years old. I think she does this because she wouldn't know how to treat a disabled person, so she talks gentle and calmly. 

In the next scenery, it shows his dad helping him out of his wheelchair which shows the boy to be weak and dependant. Before his dad left, he kisses him on the head which also shows that he is treated like a child, as well as that Belle says it is sweet when she sees men kiss. This shows that he is treated like a child outside of his home and inside as well. There is a vibe of awkwardness when it is just the two of them, Belle tries to be very carefully like he is a new born baby when really he is just a normal young boy who is trying to be like others with trying to forget he has a disability.