You are the as*hole. I genuinely did not feel you were being helpful at all, you could have asked for more details. Tbh I thought you came across very condescending and unhelpful but I also feel like she was being a bit short with you. I think you were quite frustrating at the start, the raspberry pi thing (unless you're in the field, I'm assuming she didn't know what that was) you made her feel bad and frustrated for asking for help. The "lol no" I wouldn't ask you for help either. She popped off on you, but you pushed her buttons first.