north,
I apologize for not getting back to you. Had a cat go missing and another sick. Fortunately missing cat returned yesterday and I think sick cat will be OK without having to go to vet. When there are demanding issues with one or more cats my thoughts are on them and it is difficult to concentrate on my dream work. I always try to provide the best analysis with every dream and when I can not do that I won't give an interpretation. Confusion doesn't help, it can add to the problem.
AS for your sister and the emotional energies. Knowing there are issues with the relationship and why they occurred is probably the most important aspect in resolving the issues. Continue to work with the issues and your sister. It is a process that takes time and a willingness to resolve the issues. Dreams can help in that process but the true path to solution is consciously working to resolve the emotional energies. Your sister is working on her issues and that helps.
Going back to your dream. A cleansing of energies is what you seek and need {bathtub} to rid yourself of the guilt {toilet}. The little girl you knew is not then woman you know now. Finding a path to resolving what can not be forgotten {sister relationship in childhood} seems to be the major task. It is as much an unconscious issue as it is conscious. Dreams reveal the unconscious energies so the conscious self can work for solution.
You are on the right path. Continuing to work for resolution will eventually lead to better days.
Jerry
Age & Gender & Location {Required}: 70 Altoona, Fl