My Mom Refuses to Understand My Condition

Do any of you have a parent who refuses to understand your condition? Or is it just me? My mom knows I am hard of hearing and have adhd/anxiety/depression and a few other things, yet she chooses not to try and learn about them or try to understand it at all. She would rather stay ignorant than actually help me or herself. She won’t even attempt to learn how to sign. So I get used to her ignorant comments about me and other people with mental, physical or any chronic illness; however, I feel so embarrassed to be around her when she says them out loud. Now she is NOT the type of person to see something and walk up to someone and say something nasty. But, she will if the person is around her and accidentally bumps into her or coughs around her or really anything that involves her. When someone explains to her that there is a reason for whatever behavior bothered her she says something stupid like “oh we all go through that” or “everyone is on the spectrum, they just need better house training”. Then she gets annoyed at me for being mad at her for saying them in the first place and then it causes a bad tension between us. I sent her plenty of articles and talked to her about it in detail and she listens and swears up and down she understands but when we are in public, its like all that went out the window and she doesn’t care who she hurts or what she says. Which is ironic because other than this, she is a really nice and funny person with a big heart. She just is so stuck in the 60s and forgets that lots people (even back then) struggle with mental illness and if you learn about how to deal with people with those conditions then maybe she will be able to handle the situations better.