Doctor won’t sign disability student allowance form

My welfare tutor has been urging me to apply for a DSA for a while. Other staff at the uni recommended me to also. I have had depression, anxiety and BDD for years. I attempted suicide in 2014 and 2016 with subsequent hospital admissions. I just came off medication for an anti depressant a few months ago because I was scared of becoming overly dependent. My depression still exists and it’s quite bad some days, another incident happened where I was in an abusive relationship and there was a large coerced debt built up in my name and all of this was quite recent so I still have extremely low days where I’m crying constantly, don’t eat or sleep and have suicidal thoughts. The DSA (disability student allowance) is given on the grounds that you have a mental health condition that has been long term.

I just registered at a new GP surgery in October this year due to distance, my old one was too far. They said they do not have my old records so I printed off some of my medical documents that I have on my computer to show that my condition has been longer than 12 months. They called me in for a second appointment to fill in the form yet the doctor said that the question “Does the student have a physical, sensory or mental impairment which has a substantial* and long term adverse effect on their ability to carry out normal day-to-day activities (including education)?” she doesn’t think she can tick the “Yes” box for it. She said that because I haven’t been admitted to hospital recently and attend uni sometimes that she can’t tick the yes box.

Is this okay for her to do? And what do I do now?