“Would” isn’t always conditional

In this famous scene from “Pretty Woman” Julia Roberts’ character Vivian uses the modal verbs “would” and “will” not as conditional and future, but in their meaning connected with “will” as “volontà”. When she says “Nobody will help me” she isn’t talking about the future, she means “nobody wants to help me”. And when she returns to the shop the next day she uses the past form of “will” in this meaning, when she accuses the snobbish shop assistant: “You wouldn’t wait on me”. In this scene we can find the conditional “would” too, used by the shop assistant when she says to Vivian “I don’t think this would fit you”.