What is the main conflict in The Bottle Factory Outing by Beryl Bainbridge?

The Bottle Factory Outing is a novel about the lives of two women who share an apartment in London and work at a wine factory. Brenda, who left her abusive husband in the country to come live in the city, is a shy woman who is afraid to speak up for herself and gets pushed around by other people. Freda, an outspoken dreamer, is bossy and likes to feel that she has control over her less-fortunate roommate. Freda has planned an outing for all of the employees at the factory.