I know it is to late, after the fact, but if a similar issue comes up in the future about her wanting you to do something. Try agreeing on a specific time that you will do this activity, and try to get this activity begun on the time you specified to her. Some people do not handle generalities well such as soon, later, or whenever. Some people need to know a specific time that something is going to be done. It reassures them that they are not just being brushed off and your intentions are genuine. Others are simply a little OCD about timeliness and need specifics to appease them or to feel organized.