There are still many days before Valentine's Day. You can give her some gifts that she likes or loves. It is estimated that it will be sent on Valentine's Day, one day earlier at most, but not later than sunset on Valentine's Day, otherwise it will be meaningless. As for the gift, of course, it's up to you to choose. Whether you can empathize with her depends on the gift itself. If she attaches great importance to you, she will like anything you give her.
Besides, you'd better call her and tell her how much you miss her. Or go to an Internet cafe, and both of them use computers with video equipment to communicate online, so that she can see your good feelings for her.
In fact, there is no need to write what everyone should do here. As long as you do it with your heart and love her wholeheartedly, I think she will understand your heart! Work hard and love her!