I made my co-worker upset

I have a colleague in the spectrum that works closely with me. She is very clever, but as we are nearing our capacity, I'm put in a place where I need to address little things she made that I corrected. It wasn't a big deal for me but I need to plan on how we can do things easier. I told her some mistakes she made and went over them one by one. She seems okay with it.

Today I learned that she is upset with that and felt like everything she did is wrong. Which is not true. Now I feel like an asshole for bringing those up. Please can you guys let me know how to talk with her and not upset her? Or make her feel better.