My girlfriend (27f) called me (28m) unsupportive because I expected her to go to work and not phone in sick

My girlfriend suffers from depression and because of this has had a lot of sickness with work. Her current job have tried to support her and have made sure she can speak to a psychologist at work for as many sessions as needed and have allowed her to reduce her hours.

Because of the sickness she has had to have a verbal warning though as she’s exceeded the amount of sick periods. She’s told she can’t have any more sick periods in a year otherwise it’s a written warning then dismissal after that. 

The issue is my gf seems to give up as soon as she’s feeling slightly down. Shes annoyed that dropping her hours haven’t pretty much cured her and I pointed out to her it was to help manage her symptoms and to stop them getting worse, not to get rid of them completely. 

This week she’s feeling slightly low. She still managed to go shopping on her day off and go out and see people but now is phoning in sick today. I told her she can’t just not go in whenever she isn’t feeling perfect and that if she skips work now, we’re pretty much screwed since I can’t afford everything myself, 

She called me unsupportive but I just said Shen weds to be more resilient and work with the psychologist on how to manage her symptoms when they appear and not expect them to just vanish. 

She again called me unsupportive but I asked how she was supporting me by doing this and causing the financial burden to be solely on me. 

She ignored my question and just said I should be supportive and should be there for her. 

Does anyone have any advice on how best to approach this or have any other views on it?

tl;dr my girlfriend has has a lot of sick days and has been told shell get a written warning if she has another within a year then she’ll be fired if she has one after that. shes Tl king about phoning in sick as she feels a bit low. when I pointed out we can’t afford for her to lose her job she called me unsupportive.