When you want to help others in the future, try to relax and don't let others think you are helping her.
What's more, you are very kind to this girl today, and she is very grateful to you. At the same time, you satisfied her little vanity and made her think that you might like her a little and that you are quite popular. However, if you treat everyone like this, you will inevitably feel sour in your heart.
If you have a good experience and think about it, you will generally have a level in your heart. People at every level have different degrees. Actually, it's not that hard. There must be something special you want to be nice to her, some of which are just a little bit. Again, whatever it is, relax and be natural.