is victoir in the epologue of deathly hallows bill and fleurs daughter?

Yes,she is!...Victoire Weasley is the eldest child of Bill and Fleur and the oldest of the Weasley grandchildren.She is named because she is born on the first-year anniversary of the Battle of Hogwarts (May 2nd)."Victoire" literally means "Victory" in French, the native tongue of her mother Fleur. Victoire herself is only mentioned in the epilogue of Harry Potter and the Deathly Hallows. James (Harry's son) saw her 'snogging' Teddy Lupin.
Other children
Dominique Weasley,second daughter of Bill and Fleur
Louis Weasley,son of Bill and Fleur
(Wikipedia)

Yes :)

i dont think so. maybe