@Babiapalah
I want to make it clear up front that my response to you isn’t intended to be insulting or admonishing.
There are different causes for depression. Some cases of depression can be tied to environmental issues, like not getting enough sleep, having a very unhealthy diet, or substance abuse. Those kinds of cases can usually be solved by creating healthier habits.
Other cases are psychological, where a situation can lead to the individual feeling overwhelmed by a situation to the point they can no longer cope. Death of a loved one, diagnosis of a severe illness, or loss of a job are good example. These would likely be better treated with therapy and perhaps medication if deemed necessary.
Then there are people who suffer from depression as a result of a genetic or structural issue with the brain. With our main female character here, she is definitely on the autism spectrum. That doesn’t necessarily mean she automatically has depression, but the fact that she seems to have both Obsessive-Compulsive Disorder and General Anxiety Disorder points to her also having a legit depression disorder. OCD, GAD, and Depression are all linked disorders that are caused by similar genetic issues. If you have one, it doesn’t necessarily mean you have the others. But it IS very possible.
You can cure mental disorders caused by environmental factors. But you can’t really cure mental disorders caused by genetic issues. It would be like telling a person who was born without their right arm that they can be cured. You can’t really cure something like that.
The best you can do in that situation is use methods to help cope. That likely means medication to force the brain to either limit some activity or increase something (depending on the disorder). Therapy can also be extremely helpful to assist the person create healthy coping mechanisms. But you can’t really “cure” someone of their mental disorder if it is caused by a structural issue in the brain stemming from a genetic issue.
The female MC likely will always require medication in order to function anywhere close to normal. Therapy is also likely necessary due to the abuse and trauma she seems to have suffered in the past that is magnifying her depression , OCD, and anxiety. The therapy can help her create healthier coping mechanisms and work through the psychological trauma. But you can’t cure her.