How does stella respond to blanche's criticism of stanley?

Blanche attempts to convince Stella that she can get out of her situation, but Stella insists that she is not in anything she wished to get out of. Blanche continues to try to convince Stella to leave, but Stella is firm – she is happy. It doesn't matter whether or not Blanche understands, because all that matters to Stella is her relationship with Stanley. Blanche puts a name to it – desire – and compares it to the street-car of the same name.