In Act 1, Scene 3, she refuses to talk to her daughter about marriage, as she feels uncomfortable about it, but in Scene four, she is pleased about Count Paris' "interest" in her daughter.
In Act 1, Scene 3, she speaks to Juliet about the marriage of her daughter and Paris, we see this as she compares him to a book, where Juliet is the cover. However, in Scene four, she is pleased about Count Paris' "interest" in her daughter.