Generally speaking, you should give it to your granddaughter's girlfriend for the first time, but only if the elders also give lucky money to other grandchildren's children, that is, whether to give lucky money to your boyfriend at the same time. If their family has this kind of attention, they should also give you a copy to show that they regard you as one of their own, but you don't have to care too much about it. Some old people don't pay much attention to etiquette and don't think too carefully. Don't let this affect your feelings. You should mainly look at the feelings between you and the attitude of their families towards you. If their families treat you well and accept you, then you don't have to care too much. To tell the truth, there are too many exquisite things in old Beijing that are too complicated. If you talk about old people, you will be exhausted. Hehe, I still hope you live a happy life, get along well and have children early, haha!