<human>: Summarize the given text in a few sentences.

I live in Latin America and 2 days ago my girlfriend of 1 year moved here to live with me. Today morning I was having my breakfast, my girlfriend came in and started to cry. She locked herself in the bathroom. 

After some time she came out, she was a little less anxious so we could talk. She explained to me that the brand of the bread I was eating triggered her condition. She says she has Posttraumatic stress disorder from being bullied in high school. She wasn't very specific about the nature of the bullying she suffered but the brand is "BIMBO" so I googled it and I guess I understand where is coming from. 

Thing is she doesn't want to see me eating that bread again but in my country since the inflation is very high there are price controls and this brand is the cheaper one. There are other brands but are much more expensive. She is currently not planning to get a job, I'm paying her university so she can graduate and get a decent job here, so my budget is really tight and I'm no position to buy the expensive bread. 

She is not willing to negotiate and I find a little unfair I can't my bread in the morning. How can I explain to her that is not really possible to buy another brand of bread at the moment?
<bot>: My girlfriend suffers from Posttraumatic stress disorder from being bullied in high school and is triggered by the brand of bread I can buy. I can't afford to buy another brand of bread, and she is not willing to negotiate with me.