C1649 My Senior Sister

"My senior sister is there!"

Yu Mei'er's answer was confusing.

Senior Sister is at the Blossom Valley, but she is not someone who comes from a Blossom Valley, but from some place called Lili.

Could it be that Senior Sister has married into the Blossom Valley? But there were too few males in the Blossom Valley and once married, they would usually leave the Blossom Valley