I'm sorry your family is being so difficult. Being mad at someone who is obviously having a difficult time with their treatment is not really being very supportive. It was easier for me to make the decision and then the change because I really didn't have to "please" anyone but myself. I did tell my sons what I was doing but they said they backed me up whatever course I chose.

For those who seem to know more than you do about your current treatment (Rebif) I'd ask them specific questions about the medication. Chances are they won't be able to answer you. Then, I'd tell them the answer and ask them to please be more informed about something they are pushing hard for you to continue that obviously isn't compatible with your body.

It might take a while for others to come to terms with your decision but you're the only one who has to live in your body.