If your girlfriend deliberately chooses wine for you, this may be what she wants to express most.
One, that means she knows you. She knows you like drinking. When no one gives a gift, choose something that the other person doesn't like. Giving what you like may be the basic common sense of giving gifts. I haven't heard much about sending wine to my boyfriend. Your girlfriend is very smart and doesn't take the usual path. Congratulations.
Second, China's wine culture has a long history. Moderate drinking is good for health. From the health point of view, people are not advised to drink alcohol now. In response, and meaningful, you can save it. Save it for the wedding night.
Third, the smell of wine can also be understood as that she is full of expectations for the future of both of you, which means sweet love and happy life.