A man who had been living with a woman in an old farmhouse left without warning. In a note, he told her that he was not coming back other than to get his possessions in the spring, and he told her not to touch them. Among his possessions was an extensive set of woodworking tools that he kept in a workshop. During the winter, the cost of heating the farmhouse, which the two had previously shared, became too high for the woman to pay. The manager of the local heating oil company agreed to provide heating oil in exchange for unlimited use of the woodworking tools. The man learned that the tools were being used by the manager of the heating oil company and sued the woman for conversion. No harm was done to the tools. If the woman prevails, what is the most likely reason