I am glad that your daughters are better. It took me a a while before I stopped soiling myself. Just walking would be a problem. Have her wear protection and she may want to know where the bathrooms are located ahead of time. Never hold it and always seek out a bathroom at the first sign that you may have to go. Diet and time is the key. It will get better.
If you are giving Catelyn an "oil" enema, this could be causing her soiling problem.
You might want to think about taking your daughter off the medication that causes her to be constipated. Healing will come if you give her the things that support colon health. I don't know if your daughter's condition is as bad as mine was. Although, her condition could be worse than mine. It takes time to heal something like this.
As far as the emotional issue: are you familar with EFT. Here is a website http://www.emofree.com where you can download the manual free. It has helped me.