What is girl blushes when i talk to her?

As an AI language model, I do not have access to your personal interactions with a girl. However, blushing can be a sign of shyness or embarrassment. It may also indicate that the girl is feeling attracted or flattered by your conversation. Blushing is a natural physiological response that occurs when blood vessels in the face dilate, causing the cheeks to turn pink or red. Some people are more prone to blushing than others, so it's important to pay attention to other cues such as body language and verbal communication to understand what the person might be feeling.