What is the relationship between Shangguan Waner and Shangguan Xiaomei?

Shangguan Xiaomei is from the Han Dynasty, and Shangguan Waner is from Wu Zhou. It doesn't matter if they are too far apart. If they are not seniority, then Shangguan Xiaomei must be an ancestor of Shangguan Waner. But Shangguan Xiaomei has no children, so they are really a family. In Shangguan Waner's generation, I'm afraid the fork is too big and the blood relationship is too thin to be ignored.

It is said that Xiao Guan's sister was also a high-ranking person in the Han Dynasty. Who told her to marry a man with high qualifications (Zhao Di, Emperor Gaozu)? Like Huo, the family relationship is the aunt of the little official's little sister, but no matter what the relationship after marriage, the little official's little sister has become an elder, a grandmother of Huo (one generation higher than her grandfather) and a queen mother (one generation higher than the queen mother) at the age of fifteen.