Hello, I've always wanted to reply to this post. Not having family support does hurt me. Trust me I know because whenever I had a problem, I couldn't turn to my mother. She would say things like "You think you're the only one sad, everyone else is sad too" or she would be blunt and judgemental towards my problems. So at 15, I broke and I started to seek for care. I connected with Kidshelpline, they are very helpful. But being self-sufficient and solving your own problems does take a toll on you. It seems like you feel neglected by your mum and that she is unfair to you. She is unfair to you and you don't deserve that.
Seeing mental health professionals with your mum does hurt, trust me I know. It seems like they trust her opinion more than yours.Seeing that you are 24, you can see a doctor by yourself and they can't disclose your information to her because of confidentiality. You can see a psychologist by yourself, too. Try to get a mental health plan if you can. The toughest thing I have to tell myself and I will tell you to is that you don't need those mental health professionals' opinion of you.
Your health is a picture of your social determinants ie income, family support. In order to be well-adjusted you needed to have the resources, you needed SUPPORT.
I never got this support, but I see a psychologist fortnightly. You just need to explain your situation to them. I'm sorry to hear that you haven't been getting the support you need. You're not the one with the problem, she is the one making you feel sick. I know because when I got sick, my mum was one of the reasons why.