HI Emma
You have been very brave and open so far with us and your parents. Give yourself credit for this at least.
Your father sounds like he is a little more empathic than your mother, and her actions sound quite cold.
My mother was a teacher, god help those kids, and her mentality was about academia and control. Little was thought of the the link between mental illness and troubled kids. It was all just about being naught and disobedient.
If I have read correctly so far about your mother She sound very similar in personality and thinking.
I think it is important for you to learn acceptance of certain things.
Accept that your mother is not going to give you the support you expect, she probably does not know how, it is not in her ability to be empathic. Accept that your dad is trying to understand but may not be able to give you the help you need, he probably just does not know where to start. Hence the guidance towards a therapist.
Accept that they both had the opportunity to read the information so that more knowledge would give them the power to understand. Accept that you have been brave and mature and can only give information but cannot make someone understand, no matter who they are. Accept that their behaviour and attitude is not because of you but a reflection of the type of people they are themselves.
Everyone is an individual and is responsible for their actions and thoughts. Everyone has different behaviours and attitudes and it shows what they are inside. You should never blame yourself for the way others are, they own themselves.
With this acceptance it frees up time that you might have spent trying to make them understand, and gives you time to focus on how you can improve your life in the present moment.
A trained therapist and self growth will allow you to move forward in a more positive way as a strong individual.
best wishes
Saffy :)