Would you help me to answer this question?

Question 2

Bill passes his driving test and decides to celebrate with his friend Dilip.

Dilip only drinks orange juice but buys Bill 4 pints of beer. Dilip allows Bill to drive him home but as Bill is drunk he does not notice the traffic lights are red and he drives into a car driven by Sepideh.

Dilip breaks his leg. Sepideh breaks her arm which would have been prevented if she had worn a seatbelt.

Sepideh is taken to hospital where Dr. Smith examines her. Sepideh's hospital notes clearly show she is allergic to penicillin.

Dr Smith does not check her notes and prescribes her penicillin. Sepideh has a severe allergic reaction as a result of which she goes deaf.

With reference to the law on negligence and decided cases advise Sepideh and Dilip, your answer should include any defences which could be raised.