Yes and no. Some things go beyond the mere business, and the feelings are among them. Leora is clear that she is with Paul far beyond just having a business together, otherwise there would be far fewer phone calls between them, for example. The fact that they are business partners does not mean that Leora must necessarily be together with Paul (especially if she no longer loves him), and the opportunities to leave him certainly do not lack. But yet...They are still together and from how Slip wrote before Leora does not fail to feel affection for Paul.