Given the following context:

Tom Hepple, a geologist, and Gerri Hepple, a counsellor, are an older married couple who have a comfortable, loving relationship. The film observes them over the course of the four seasons of a year, surrounded by family and friends who mostly suffer some degree of unhappiness. Gerri's friend and colleague, Mary, works as a receptionist at the health centre. She is a middle-aged divorcee seeking a new relationship, and despite telling everyone she is happy, appears desperate and depressed. She often seems to drink too much. The Hepples' only child, Joe, is 30 and unmarried and works as a solicitor giving advice on housing.
In the summer, the Hepples are visited by Ken, Tom's old friend from his student days. Ken is overweight, eats, smokes and drinks compulsively and seems very unhappy. Tom and Gerri host a barbecue in Ken's honour. Mary drives her newly bought car to the party, but gets lost and arrives late. Having had some wine, she flirts with Joe, whom she has known since he was a child. He remains friendly but does not reciprocate the flirtation. After the party, Mary reluctantly gives Ken a lift to the train station. He makes a clumsy romantic advance and Mary irritably rejects him.
Months later, in the autumn, Mary is once again at Tom and Gerri's home. Joe arrives with a new girlfriend, Katie. Mary appears rude and hostile towards Katie, which is not appreciated by Tom and Gerri. This creates a rift between Gerri and Mary.
In the winter, Tom, Gerri, and Joe attend the funeral for the wife of Tom's brother, Ronnie. Towards the end of the service, Ronnie's estranged son, Carl, arrives, and angrily asks why the ceremony was not delayed for him. At the reception at Ronnie's house, Carl becomes aggressive and walks out. Tom and Gerri invite Ronnie back to London to stay with them for a while and Ronnie agrees.

answer the following question:

Who did the receptionist drive to the train station? 

Ken