She would have to talk to him about their marriage and whether or not they should stay married.
Intermarriage
there are many different judgments amongst shittes about the marriage of shiite women with a sunni man.some believes that such a marriage is not permissible and is disapproved.the important point is that the judgment does not say that the marriage is forbidden but says that this is reprehensible or makrouh.
The marriage will be perfectly valid and there is nothing that stops inter-sect marriage. Make sure that you check the national laws as not all the laws in Muslim countries are based on Shariah.
no
shia Ulama believe that if a shiite Woman wants to marriage with Sunni man then this marriage is execrable or Makrouh , of course most of them also says that this kind of marriage is forbidden. also a Siite man can marry with a Sunni women.
in both shia and sunni Islam having any sexual relation is allowed only by marriage.
Maya Diab is a christian catholic Maronite and she refused to convert. Her husband is Saudi Arabian muslim sunni. But hes a very modern muslim and didnt force her too.
Sunni
Sunni
Most of them were Sunni Hanafis.
He was born as a Sunni Muslim, but he considered himself an Atheist and had a very dim view of Islam.
No. This group does not permit same-sex couples to marry, nor does it permit same-sex relationships.