2. She's trying to get to know you .Teasing in a positive way can be a way of showing curiosity about the other person.
3. She likes your company. You have to create a rapport with someone before teasing can feel comfortable, because they have to trust that your feelings won't get hurt easily and that it comes from a good place of care and humor rather than rudeness or dislike. Therefore, she probably enjoys hanging out with you and feels at ease in your presence.
4. She is jealous. Girls will tease the boys they like if she sees something she desires in some other other girls so it creates insecurity.
5. She simply thinks it's fun.Sometimes people tease out of boredom or because they think it's humorous when people react. If she makes jokes about your clothing choice or how loudly you're laughing.