u/CultivatingFlower

So I (M28) and my girlfriend (F26) came home with some breakfast burritos from a truck nearby,and my mother was home. She was in the living room and she came over and told me and my girlfriend “you guys are eating out too much, you guys need to start toning it down” but me and my girlfriend went to my room and she immediately started crying. So my girlfriend is plus size and she took it as my mother basically saying “you eat too much and are fat” but I understand she was basically saying we need to eat at home and save money. She has told me before to be careful going out to expensive restaurants and spending a lot of money. But my girlfriend immediately took it as me “siding with my mom” over her and got even more upset and got very angry with me saying I’m defending my mom and not believing in her. Now she isn’t wanting to eat saying my mom is right and she’s fat and she is telling me she’s going to the gym. I told her I was going to talk to my mom to solve our issue, but she immediately shut it down saying me talking to her will make her even more upset. She said she doesn’t wanna cause family drama and she still can’t believe I took “my mom’s side” over hers and not understanding how upset she is and how I don’t seem upset and said “watch next week you will be talking to her like usual.” What should I do? I just can’t think of how to get out of this box of her being super upset, my mom wording that comment like that and my girlfriend being super upset and not wanting to talk right now.