Nikaah & Marriage Issues

Wali for a revert Muslim

Q: I got a question about marriage. I have recently met a girl that has reverted to Islam, and me and her we want to get married, I am a muslim, my parents approve, but her parents are non-muslim and do not approve her getting married. So I was wondering who will be her Wali, as nobody in her family or house hold are Muslims. How do we do it with witnesses when we are doing nikah and she is 18 so its legal.

Attending a shia marriage

Q: A cousin of mine in a highly deendar environment has married a shia and our family decided not to attend the marriage of our cousin. However, a few of our deendar relative and elders called us and scolded us for doing Qata' Rahmi. Q.1 What is the fatwa on attending a marriage/nikah being arranged by Shia? Is it permissible or impermissible? Q.2 Is it Qata' Rahmi on our part to boycott the marriage?