Generally speaking, it is not surprising to be polite to many people. If you want others not to refuse you, start with a light gift and send one from time to time to remind her of you from time to time. If you give an expensive gift for the first time, you are more likely to refuse. You're right. There must be a reason for giving gifts. Before giving a gift, you should think of a good reason, even if it is unreasonable, so that she will be happy and think you are considerate. Okay？