Hey sweetheart, first of all I’m sorry you have to deal with your mother’s behavior on top of the chronic pain. I think it’s amazing how much you managed to accomplish in spite of it all, and I hope you can feel proud of yourself, for your accomplishments as well as you being you.

That said, I don’t think there is a clear way of making your mother understand how you feel. There’s a few things you can try. If your mom is inclined to listen to you, maybe try to tell her how you feel and how your disability affects you on an emotional level as well as a physical level. Make sure to not compare yourself to others, and stop her from comparing you to others. Say something like “This isn’t about other people, this is about me, how I’m feeling and how I’m struggling.” You need to be very patient but firm while you do it, which is always hard when you talk to a parent. I hope this way works out for you.

If your mother refuses to listen, however, I’d suggest getting that parking permit regardless of what she says. You’re an adult, you have a right to ask for these things and to receive help, whether or not your mother agrees with it or not.