Just because a girl's signature says "Don't disturb" doesn't necessarily mean that she is looking for someone. The significance of this personalized signature is to hope that people around her can understand her social fears and not bring her pressure and discomfort. People with social phobia are usually afraid to associate with others, so they need more personal space and time. Therefore, if you want to be her friend or partner, you must first understand her needs and feelings and respect her personal space and choices. In addition, I suggest that you contact her with understanding and support, and don't regard her illness as a limitation or defect, which is related to maintaining health.