Who is Helen and Margaret from London Transports and what is their importance? London_Transports English & Literature Helen and Margaret | London Transports

A chubby, pretty, twenty-three-year-old Australian, Hell is May's roommate at the abortion clinic. She has been there before and has friends who have been up to five times. Hell explains what to expect. She cannot take birth control pills and finds other means of contraception too messy. Insisting that the rules are to inform the father and have him pay for the abortion, Hell calls May the noble Lady Galahad and strongly advises her to tell Andy when she gets home. Otherwise, Andy will not realize the sacrifice that she has made. Hell's lover Charlie visits, tells funny stories, arranges to see Hell next day, and goes home to a dinner party hosted by his wife.