What do you think about me telling a woman and her disabled daughter to back off?
Why do you need to tell them to back off?
I always felt awkward around them
I also want to have my personal space and not always have to deal with people all the time. But, if they are doing their own business and not bothering you, then you should not feel like you need to tell them to back off. I would carefully consider you moving away from them and not have any unnecessary tension.
I feel like living alone.
It's important to consider your reason for telling the woman to back off. If they have not done something to harm you, then you are wrong. You should show them the same consideration and respect that you would want.