My girlfriend is always getting mad at me for little things that I don't mean to do.

Today, she texted me a half an hour before her lunch and asked me if I could bring her Taco Bell for lunch. I rushed out the door and left trying to make sure I had enough time to get her food and then bring it to her work. I was too rushed to notice that she texted me saying what she wanted. So, I accidentally got her the wrong thing (although, it's usually the food she gets when we go there--so I know she likes it). I realized once I got in the car that I got her the wrong thing. When I brought it to her work she was really rude and told me she was mad at me, and was almost yelling at me, saying it's not that difficult to read a text. Shouldn't it just be the thought that counts, though? I went out of my way to do her a favor, and she just seems ungrateful. Am I overreacting, or is should I talk to her?

Id talk to her I do not feel your over reacting thanks and star