Mrs Birling reminds Sheila of her place. As a quote this emphasises just how engrained the patriarchy was (the patriarchy is the social system that kept men in power) because in it we can see Mrs Birling almost teaching her daughter that she will have to accept being ignored in favour of business. However, at the end of the quote Mrs Birling does express some dissatisfaction, admitting that she had to "get used" to it, something which at least makes it clear that she didn't like the situation. The quote also, however, reminds us how hard men like Birling had to work in order to build and maintain their businesses, suggesting that the system didn't entirely help them either.