Evans, Petunia

From Wikipotter

Petunia Dursley (nee Evans)is the aunt of Harry Potter. She is the sister of Harry's mother, Lily. She is married to Vernon Dursley, and mother to Dudley Dursley. She is a muggle unlike Lily.

In the books, it often says she purses her lips and curses Harry's mother. In Deathly Hallows, it is mentioned that Lily and Petunia (nicknamed Tuni), were good friends. When Lily got the invite to Hogwarts the sisters tried everything to get Petunia a place. Although this did not happen, Lily still went to Hogwarts.