Well, she had sex first with Kaname before. She got pregnant with his child and after she had sex with Zero and had his child.
there is a really big age difference between her first and second child. there is an extra that has her friend from highschool as a grandma and she is talking to Zero telling him she was hoping him and Yuki would get together before she passed away.
what a minute, what chapter did she do it with kaname. i dont think i remember that.
@Desiree they did it here http://www.mangago.me/read-manga/vampire_knight/mr/vampire-knight/89/40/
Yeaa.. Thanks @yukihime. I've skipped a lot of chapter, that's why I don't know what happens.
So she had a kid with both of them? How, did they have a threesome.