Buses are inexpensive.
I have cared for people with Huntington's ---it is a painful experience---it may help if you can talk to other people who are going through/or have gone through this experience. These are people I still think of often...
You could contact the Huntington's Disease Association (there will be a state affiliate) to find out if there are peer support groups near you...and a local peer grief support group could help in general in dealing with, and being able to share the pain of loss and the path to acceptance....
(((((big hug))))