When a man got addict to drugs, the only way to pay for it is by robbery, etc...
When a girl got addict to drugs to pay for it is to get into prostitution. The Hays Code since July 1934, forbidden actress portraying prostitutes, drug addicts lesbians, single mothers, etc... It was forbidden to say words like "sex, rape". Also a couple living together had to be married. During almost 30 years in USA, there was not such kind of people or situation..