My Girlfriend is getting married

So I and this girl is dating since last 9 months and we seems to be perfect and I was thinking of asking her about marriage. I am in deeply love with her. Just now she called and asked that her parents are calling her home this weekend and urgently and she got to know from her sister that they are calling her for Roka. Now I am confused what I should do and how she agreed to marry she even doesn't know. Actually she had mentioned about this guy in September that there family met but her parents doesn't know liked the Guy so they didn't initiated it. But suddenly they have fixed Roka with same guy and she is saying she doesn't know it about before and only got to know this morning only and immediately she called. I am confused what I should do